Abstract: The present disclosure is directed to illuminated devices attached to vehicles. More specifically, an illuminated device may be attached to a vehicle in the form of an illuminated logo or emblem. The illumination of the device may be controlled for color, state, and/or intensity in response to vehicle signals received by the device. In addition, the illuminated device may use switching circuitry to interface with a vehicle's electrical power and/or signals.

Abstract: A vehicular LED lamp monitoring/controlling system includes a vehicular LED lamp having first and second LEDs. A selection/control unit is connected to and controls separate activation of the first and second LEDs and is connected to a malfunction detecting unit that detects operation of the first and second LEDs. The second LED is activated when the first LED operates abnormally. A power control unit can send a control signal to the selection/control unit to control luminance of each of the first and second LEDs. A vehicle speed monitoring unit connected to the power control unit reads a speed of a vehicle on which the vehicular LED lamp is mounted. When the vehicle is still, the first or second LED provides normal luminance. When the vehicle is moving, the first or second LED provides reduced luminance.

Abstract: A multimode controller for LED light sources, especially sources in warning lights, such as light bars, provides for a temporary increase in brightness from the LEDs by providing a burst mode, in addition to a flashing mode and a continuous mode. The modes are carried out by programming a microprocessor which receives signals from control switches, which may be pressed and released. The programming precludes the burst mode to continue for longer than a predetermined time thereby ensuring that the power does not exceed the LEDs damage threshold characteristic. The controller thereby provides for temporary bursting to make visible the region in front of or around an emergency vehicle for a short period of time without the need for light sources dedicated solely to the high intensity brightness mode of operation of a warning light system.

Abstract: A wireless reverse light system for trailers is provided. A transmitter is configured to replace a light or light assembly of at least one reverse light already contained in the tractor configured to pull the trailer. When the tractor is put into reverse gear, the transmitter in place of the reverse light or light assembly sends a wireless trigger signal to a receiver light that is releasably attached to a rear and/or side of the trailer. When the wireless signal is received by the receiver, it triggers the connection of a battery supply to lights contained therein, thereby providing a reverse light or lights at the rear/sides of the trailer.

Abstract: A vehicle lighting device and method of transitioning color output by a vehicle lighting device are provided. The method includes activating the lighting device to output a first color light, and deactivating the first color light. The method also includes the steps of generating an intermediate color light with the lighting device for a short time period. The method further includes the step of generating a second color light with the lighting device. Accordingly, the intermediate color light prevents the apparent generation of an undesirable intermediate color light.

Abstract: An integrated side-view mirror and LED spotlight wherein under electronic control the light output can be changed in type, angle, direction, intensity, pattern, focus, and other properties and can include other inputs and outputs such as traffic preemption and data interfaces, sensors, cameras, sirens, and speakers. The device includes a side-view mirror assembly that may be attached to a vehicle, a spotlight integrated therein, and a controller unit that transmits and receives electronic data to and from the spotlight. A heat-dissipation surface or mechanism may be further integrated with the LEDs. A method of operating the device includes providing a side-view mirror assembly, integrating a spotlight capable of emitting light within the side-view mirror assembly; and providing a controller unit that transmits and receives electronic data to and from the spotlight.

Abstract: An interior lighting system for an automotive vehicle include a first light in a first zone a second light in a second zone, and a controller illuminating the lights in a sequence including a first welcome stage, a second welcome stage, and ambient stage, and a farewell stage. The stages are defined by an operating cycle of the vehicle as determined by conditions such as vehicle entry system status, door open/closed status, and ignition status. The colors and intensities of the lights varies throughout the stages to provide both adequate task illumination and attractive lighting to provide sophisticated vehicle interior illumination that is well harmonized with the various Stages of occupant ingress and egress.

Abstract: A vehicle lamp includes a semiconductor light emitting device as a light source, a power supply module configured to supply electric power from a power source to the semiconductor light emitting device, and a housing in which the power supply module is accommodated. The semiconductor light emitting device is mounted on the power supply module. The power supply module comprises a current control circuit configured to control an amount of current supplied to the semiconductor light emitting device. The semiconductor light emitting device and the current control circuit are arranged to overlap each other in a direction of an optical axis of the semiconductor light emitting device.

Abstract: An elevator control device capable of carrying out proper control considering the energy saving and service life of lamp for various types of the lighting fixtures provided in an elevator car. The control device which controls the lighting fixture includes a storage which stores the type of the lighting fixture, a setting mechanism which sets transfer time for automatically pausing the car based on the type of the lighting fixture stored in the storage, and a detector which detects that the car is in a predetermined standby state. The control device turns off the lighting in the car when the standby state of the car continues for the transfer time set by the setting mechanism.

Abstract: A trailer light adapter that is adapted to supply signals to operate the lights of a towed vehicle from modulated signals of a lighting circuit of a towing vehicle, includes at least one input that is adapted to receive a modulated signal from the lighting circuit of the towing vehicle and at least one output that is adapted to supply an output signal to operate a light of the towed vehicle. The adapter further includes a decoder that is adapted to decode a modulated signal and to provide a decoded signal indicative of a desired state of the light of the towed vehicle. The adapter further includes a power circuit that is responsive to the decoded signal and is adapted to supply the output signal to operate the light of the towed vehicle. The adapter may be responsive to a variable voltage modulated signal, a pulse-width modulated signal, or the like.

Abstract: In at least one embodiment, an ambient lighting system comprising a lighting module and a controller is provided. The lighting module is configured to drive a light emitting device (LED) arrangement to display a desired ambient color in response to a lighting control signal and to transmit a lighting status signal providing diagnostic information for one of the lighting module and the LED arrangement. The controller is configured to transmit the lighting control signal including first digital data indicative of the desired ambient color and a feed signal for powering the lighting module on a bi-directional data communication bus between the controller and the lighting module. The controller is further configured to receive the lighting status signal on the bi-directional data communication bus.

Abstract: A lighting system for vehicles includes a housing having a front panel and a back panel, a reflector positioned adjacent the back panel, a plurality of light sources positioned on sides of the housing transverse to the back panel, a lens positioned the plurality of light sources and the front panel, a faceplate having a transparent pattern is configured to couple to the housing adjacent the front panel, a controller coupled to the light sources having a first input configured to couple to a vehicle ignition switch and a second input configured to couple to an accessory switch, and a color mapping interface coupled to the controller and configured to receive at least one removable color chip. The controller detects at least one color signal from the at least one removable color chip and controls the plurality of light sources in response to the at least one detected color signal.

Abstract: A lighting device includes a DC/DC converter for receiving DC power and converting the DC power into a predetermined output required for a load; a voltage detection unit for detecting an output voltage or an equivalent value from the output voltage; a current detection unit for detecting an output current or an equivalent value from the output current; and a control unit for controlling the DC/DC converter based on detection values from the voltage detection unit and/or the current detection unit. The control unit reduces the output when a rapid change is detected in a load state in which a change in the output within a first predetermined time is equal to or greater than a predetermined width.

Abstract: A lighting system for an emergency exit from an occupied space: an array of lighting elements located around the emergency exit to illuminate the exit and facilitate egress for an occupant of the space; a control unit; and sensors to detect one or more trigger conditions and actuate the lighting elements in response to a first trigger condition from any of the sensors, the sensors comprising: an impulse detector operable to send a signal to the control unit indicating that the impulse detector has experienced an impulse; and a roll and/or pitch detector operable to send a signal to the control unit indicating that the roll and/or pitch detector has experienced roll and/or pitch, wherein upon detection of the first trigger condition the control unit actuates one or more of the lighting elements to illuminate the exit.

Abstract: A vehicle light device control apparatus includes a sensor unit and a control unit. The sensor unit detects an upper light intensity of light coming from an upper side of a vehicle and a front light intensity of light coming from a front side of the vehicle. The control unit determines whether the upper light intensity is equal to or less than a predetermined turn-ON threshold. The control unit turns ON a light device of the vehicle when the upper light intensity is equal to or less than the turn-ON threshold. The control unit calculates a light intensity ratio between the front light intensity and the upper light intensity and corrects the turn-ON threshold based on the light intensity ratio.

Abstract: A lighting device for vehicle lights is provided that includes, but is not limited to LEDs arranged in a combined parallel/series circuit. A first photodiode is used to recognize the lighting of a first LED and a second photodiode is provided to recognize the lighting of a second LED of the plurality of LEDs.

Abstract: A multi-function vehicle light assembly (10) (MVLA 10) that is designed to provide a compact light assembly that incorporates in a single enclosure (24) a plurality of LED modules (16). Each module (16) produces a white light that indicates that a vehicle is in reverse, an amber light that indicates that a vehicle is making a right or a left turn, and a red light that functions as a vehicle tail light and to also indicate that the vehicle brakes are being applied. Two embodiments are disclosed in the first embodiment the plurality of LED modules (16) directly produce a set of white, amber and red lights. In the second embodiment an LED module (16) is utilized that includes a blue, green and red LEDs that are selectively combined by an LED control module (22) to provide the required white, amber and red lights.

Abstract: A power-driven vehicle having at least one camera and at least one lamp, the camera is provided to photograph at least part of the surrounding area of the power-driven vehicle, the lamp is used to illuminate at least sections of said part of the surrounding area of the power-driven vehicle, and the lamp can be supplied by a power supply medium of the power-driven vehicle with power having a first frequency to generate the light.

Abstract: A luminous device is provided comprising LEDs with an LED controller for adjusting a luminous characteristic of the LEDs, and a data receiver (10). The data receiver (10), is connected to the LED controller (9), for wireless reception of data (D). The controller (4) is configured in such a way that, in predetermined switching stage (S3) of the controller (4), the data receiver (10) can be or is activated, and in the case of an activated data receiver (10), the luminous characteristic of the LEDs (3) can be adjusted exclusively by the LED controller (9) depending on data (D) received by the data receiver (10).

Abstract: The disclosure facilitates determining the presence of an abnormality of a light source in a vehicular lamp using, as a determination condition, a number of disconnected semiconductor light-emitting elements among multiple semiconductor light-emitting elements. The vehicular lamp includes a first light source block that has light-emitting diodes LED1 to LED6 connected in parallel; a second light source block that has light-emitting diodes LED7 to LED12 connected in parallel; and an abnormality determination circuit that controls a supply of current from an on-board battery to the light source blocks and determines whether an abnormality is presence in the light source blocks. The abnormality determination circuit determines the presence of an abnormality if the disconnected light-emitting diodes in one of the light source blocks exceed a predetermined number and current cannot flow to the light source block. In such case, the supply of current to the light source blocks is stopped.

Abstract: An LED short-circuit detection circuit produces an LED short-circuit detection signal by monitoring an LEDC terminal voltage (a first voltage obtained at a chip-to-chip node in a row of LED chips, or a divided voltage thereof) and an LEDR terminal voltage (a second voltage obtained by dividing the end-to-end voltage of the row of LED chips).

Abstract: A dimming control system 1 includes: light source units each having a respective LED; and a control unit connected to the light source units via power supply lines. The control unit is connected to each of the light source units in series. The control unit includes: switch portions that control dimming of the LEDs by repeating an ON/OFF operation in a predetermined cycle; current detection circuits and voltage detection circuits that detect a current or a voltage supplied via the power supply lines; and a CPU that determines there is an abnormality in the power supply lines or the light source units when a value of the detected current or voltage exceeds a predetermined range while the switch portions are ON.

Abstract: Lighting assemblies having an electrical cable, light emitting diodes, and control circuits. The lighting assemblies are useful, for example in vehicles (e.g., automobile, trucks, etc.), as well as task lighting accent lighting, merchandise display lighting, and back lighting applications.

Abstract: A circuit arrangement for operating at least one light emitting diode, in particular for a motor vehicle, includes: a communications device which is connectable to a data bus and which is adapted for receiving control signals from the data bus; a control device connected to the communications device; and a control circuit connected to the control device for the clocked control of a switching regulator which is adapted for providing an operating current for operating the light emission diode, with the control device being adapted for controlling the control circuit on the basis of the control signals received by the communications device.

Abstract: An automotive illumination device includes a dome lamp bulb, a transistor switch, an in-vehicle unit, a door status detection unit, and a microcontroller. When user's access to an automobile has been detected by the in-vehicle unit, the microcontroller controls ON/OFF operation of the transistor switch at duty ratio of 60 percent to turn on the dome lamp bulb at brightness of 60 percent (welcome illumination state or mode). When opening of a door of the automobile has been detected by the door status detection unit during the welcome illumination, the microcontroller controls the ON/OFF operation of the transistor switch to always close the transistor switch (at duty ratio of 100 percent) to illuminate the dome lamp bulb at brightness of 100 percent.

Abstract: A vehicle lamp includes: N semiconductor light sources, wherein N is an integer of 1 or more; M fans configured to cool the N semiconductor light sources, wherein M is an integer of 1 or more; N current supply units configured to supply first current to the N semiconductor light sources, respectively; and a control unit configured to receive electric power supplied from an electric power source and supply second current to the N current supply units. The control unit includes: N switch elements that correspond to the N semiconductor light sources; M switch elements that correspond to the M fans; and a control circuit configured to control fan drive current supplied to the fans through the switch elements and the second current. The fans are coupled to the control unit.

Abstract: A lamp and lamp driver are disclosed, in which single intensity marker lamps that are desired to be flashed can be connected to a lamp driver employing an exclusive OR (XOR) logic circuit. In one application, this lamp driver is coupled to a vehicle turn function wire and marker function wire, and a plurality of marker lamps in a row can be of the same style, but one lamp can be flashed in the row of marker lamps. In some embodiments, if all of the marker lamps are on, the lamp being driven by the XOR driver circuit will flash out of sequence with the turn signal flash. If all of the marker lamps are off, the lamp being driven by the XOR driver circuit will flash in sequence with the turn signal flash. Other embodiments are disclosed.

Abstract: A light quantity control apparatus, which controls light quantity of a light of a vehicle, includes a traffic-jam-information obtaining unit obtaining traffic-jam-information including information on positions and on presence/absence of a traffic jam, a vehicle-position obtaining unit obtaining a position of a vehicle, a traffic-jam identifying unit identifying whether the vehicle is in a traffic jam based on the traffic-jam-information and the position of the vehicle, a traffic-jam-time light quantity control unit decreasing the light quantity compared with a normal time if the vehicle is in a traffic jam, an urban-district obtaining unit obtaining information on whether or not the vehicle is in an urban district or near an intersection, and an urban-district-traveling-time light quantity control unit decreasing the light quantity compared with a case where the vehicle is in an area other than urban districts and intersections if the vehicle is in the urban district or near an intersection.

Abstract: A vehicle lighting control device includes a switching unit to perform ON/OFF control of a driving current supplied to a semiconductor light source depending on a light control signal; and a constant-current control unit to perform constant-current control on the driving current. The constant-current control unit includes a switch unit to perform ON/OFF control of the switching unit; and a signal-maintaining unit to provide a voltage signal corresponding to the driving current to the switch unit when the switching unit performs ON control, and to provide continuously the voltage signal to the switch unit when the switching unit performs OFF control.

Abstract: An airborne vehicle lighting control apparatus and method for automatically controlling activation and deactivation of an airborne vehicle lighting system. A processor for automatically controlling the lighting system can be employed and having one or more sensors operatively connected to the processor for sensing the current flight operating mode and geographical position of an airborne vehicle. The processor can activate or deactivate lighting based on the current flight operating mode and position.

Abstract: An automotive vehicle system includes a light and a module. The light is adapted to be attached to an exterior of a vehicle. The module selectively illuminates the light during a vehicle stationary period based on an electric drive system state of charge. The module further selectively illuminates the light during a vehicle driven period based on vehicle operating conditions different than the electric drive system state of charge.

Abstract: A control circuit for adjusting a backlight color is provided. In accordance with a preferred embodiment, the control circuit comprises an input device, a control unit, a backlight, and a plurality of pulse-width modulation units. The input device receives a plurality of external messages to generate a corresponding plurality of control signals. The control unit has a plurality of pins, implements a plurality of calculations based on the plurality of control signals, and generates a plurality of light-adjusting signals, each of which has a respective pulse width. The backlight has a plurality of light sources for a color mixing. Each of the pulse-width modulation units is correspondingly coupled to each of the pins and to each of the light sources, and adjusts a light of the each light source based on the respective pulse width.

Abstract: Methods and systems for easily integrating a light-emitting diode (LED) light assembly with an existing xenon power supply. An exemplary system includes a xenon power supply that includes an energy storage device and a device that commands the energy storage device to discharge the stored energy and transmit a trigger signal after a predefined amount of time since at least one of a previous discharge or a beginning of initial charge of the energy storage device. The LED light assembly includes one or more LEDs and a current regulator that receives the discharge from the storage device and regulates current to the LEDs based on LED requirements. The LED light assembly also includes a processing device that receives the trigger signal, resets and begins a timer upon reception of the trigger signal and deactivates the current regulator when the timer has reached predefined threshold.

Abstract: In a light system for a bicycle, a body is detachably installed to a frame of the bicycle. A battery is installed in the body and a first light source is positioned at a central portion of the body and shines a flashlight. A second light source is positioned at a side portion of the body and shines a light beam displaying a bicycle lane on a riding surface. A sensor detects a stop or a riding of the bicycle. A controller controls the first and the second light sources in accordance with the sensor. The first and the second light sources are turned on in riding the bicycle and turned off in stopping the bicycle. Accordingly, the light system is automatically turned on/off according to the riding and stopping of the bicycle.

Abstract: A circuit for driving a vehicle lamp includes a current path coupled between a power line and ground, and a monitoring unit coupled to the power line. The current path includes a dummy load. The monitoring unit can monitor a testing signal applied to the power line. The testing signal can test whether the vehicle lamp operates properly. The monitoring unit can conduct the current path to enable a current to flow through the dummy load to ground to decrease a total resistance of the circuit if the testing signal is detected.

Abstract: A lighting system for exterior lights of an automobile comprises a first lighting unit (10,12,14,16) primarily for outputting a first automotive light signal and a failure detection system (26) for detecting a failure of the first lighting unit (10,12,14,16). A second lighting unit is primarily for outputting a second automotive light signal. The second lighting unit comprises an LED light unit. A controller (30) is adapted to determine if there is failure of the first lighting unit, and if there is failure of the first lighting unit, to use the second lighting unit to generate the first automotive light signal. This is in response to an output request from the first lighting unit (10,12,14,16).

Abstract: A control unit determines whether a vehicle has entered an area under a covering object that covers the upper side of the vehicle. In the case where the control unit determines that the vehicle has entered the area under the covering object, the control unit turns on light apparatus when both of a measurement of an upper light intensity, which is measured with an upper light intensity sensor, and a measurement of a front light intensity, which is measured with a front light intensity sensor, require turning on of the light apparatus.

Abstract: A method and headlight adapted to supply power to a dual-mode automobile headlight light source able to provide either main beam mode lighting or dipped beam mode lighting, wherein the light source is supplied with electrical power at a first voltage when it is in main beam mode and at a second voltage when it is in dipped beam mode, the second voltage being lower than the first voltage.

Abstract: An automobile light emitting device includes a plurality of light emitting members, a control unit and an electric connection circuit. Each light emitting member is installed at an external peripheral surface (such as a fender, a wheel arch panel or a wheel housing panel) of an automobile wheel, a door handle or a door handle recess of a car door, or a car roof (such as a car antenna, a convertible top rack or an automobile shark fin), and the control unit is linked to an automobile signal light control circuit or a central lock control unit for controlling and turning on each light emitting member timely to achieve the goals of providing warnings, safety, and convenience to users, allowing the users to find their cars easily and reduce the occurrence of car accidents effectively.

Abstract: A roadside-vehicle cooperative illumination system in which a headlight of a vehicle and a road illumination lamp can be controlled cooperatively through communications between an in-vehicle apparatus and a roadside apparatus. For example, when power consumption of the headlight has to be reduced, an in-vehicle apparatus side arbiter transmits a request to the roadside apparatus for increase illumination of the road illumination lamp. A roadside apparatus side arbiter determines whether or not to accept the request from the in-vehicle apparatus, and a roadside apparatus side controller controls the road illumination lamp according to the determination of the roadside apparatus side arbiter. This enables the road illumination lamp to be controlled cooperatively so that illumination of the road illumination lamp can compensate for deficiencies in illumination of the headlight, which leads to enhancement of vehicle driver's convenience and ensuring of safety.

Abstract: Disclosed is an automotive lamp and a method for controlling the same, and more particularly, to an automotive lamp capable of informing an ambient vehicle approaching from behind of a vehicle state by irradiating light forming a road pattern indicating the vehicle state to at least an area behind the vehicle, and a method for controlling the same. The automotive lamp includes a detection unit which detects a vehicle state; and lamp units, controlled by a control unit, which irradiates light forming a road pattern indicating the vehicle state to at least an area behind a vehicle.

Abstract: An illumination system includes an LED lamp, a timer, a controlling circuit, a driving circuit and a power source electrically connected together. The timer produces different signals to the controlling circuit at different periods, thereby driving the LED lamp to lighten with different brightness. A light or movement sensor is further electrically connected to the LED lamp to work together with the timer. The sensor cooperating with the timer, detects light or movement of an object to drive the LED lamp to lighten for a while with a corresponding brightness.

Abstract: An electric power generation control device for a motor vehicle is provided which ensures a satisfactory regenerative effect without entailing flickering of or reduction in life of headlights even if the headlights are turned on at all times. The electric power generation control device lowers the power generation voltage of an alternator when the electricity storage amount of a battery is at or above a predetermined level. While lighting of a headlight bulb is detected, lowering of the power generation voltage is restrained if the state of sunlight is equivalent to nighttime, and the power generation voltage is allowed to be lowered if the sunlight state is equivalent to daytime.

Abstract: An apparatus and method of controlling the transparency of at least one window in a vehicle includes at least one multi-segment light filtering element, each segment having a controllable light transmissive characteristic. The apparatus includes at least one sensor configured to determine the physical location and orientation of the vehicle, a memory that includes stored road map information including glare characteristics of each roadway, and a control unit electrically connected to the memory and at least one sensor. The apparatus and method is configured to automatically adjust the transmissive characteristic of the at least one light transmitting element based at least upon stored road map information and the location of the vehicle.

Abstract: A variable lighting system (“VLS”) for optimizing object visibility at night by setting a base level of lighting, adding a variable light to that base level of lighting, and a synchronizing the timing and sequence of the base level of lighting and the variable lighting. The VLS varies the illumination by intensity, color, direction, or a combination thereof and optionally includes a detector for detecting motion, noise, and other occurrences. The VLS can be implemented as a fixed lighting source, a movable lighting source, or a vehicle mounted lighting source. The VLS improves visibility at night for viewers or motorists thereby reducing accidents and damage costs, saves energy, and improves the environment and enhances quality of life by reducing light pollution and light trespass.

Abstract: A regulating circuit for automobile light for outputting an elevated voltage to power an operation of a driving integrated circuit, comprises a first diode having its anode interconnected to an input of the power supply (forward biased) and interconnected to the first diode in serial (reverse biased) and then interconnected to a driving integrated circuit. The first diode is used to detect a maximum voltage input, and the second diode is used to restore its energy to the capacitor so as to keep the voltage output maintained in an elevated level. As a result, the regulating circuit can be used with all kinds of driving integrated circuit incorporated in the automobile headlight.

Abstract: Provided is a mercury-free vehicle discharge lamp that is stably lighted with a power of 18 to 30 W in a steady time. The lamp is defined in a light-emitting portion (11). A discharge medium including a metal halogen compound and a rare gas are sealed into the lamp. The lamp also has a discharge space in which electrodes (32) are disposed and satisfies the following equation. ?40?(a?35)×5.5+(x?13.5)×10+(1.85?t)×100+(2.

Abstract: A maneuvering aid for a vehicle has a lighting device configured to at least partially illuminate at least an underlying surface under the vehicle and/or a vehicle bodywork. A control device configured to control the lighting device in order to activate and/or deactivate same. The control device is configured to control the lighting device at least as a function of a vehicle speed and/or of a vehicle acceleration and/or of a distance of the vehicle from a roadway boundary or an obstacle in the roadway. A corresponding method, a corresponding vehicle, and a headlight assembly are described as well.

Abstract: The navigation lighting device for an aircraft, in particular a military aircraft and preferably a fighter aircraft is provided with several navigation light units with navigation lights, a power supply unit for the navigation tight units, and a central actuation unit for the actuation of the navigation light units in each one of several modes of operation. The navigation light units can be actuated for operation in a mode of operation by the central actuation unit sequentially in a predetermined sequence and thus with a time offset. Each navigation light unit comprises a control unit connected to the actuation unit for the actuation of its navigation light in the operation mode predetermined by the central actuation unit. The control units of the navigation light units comprise time-delay elements for the temporal delay of the actuation of the navigation lights on the receipt of an actuation signal of the central actuation unit.

Abstract: A trailer light converter that is configured to operate lights of a towed vehicle from signals supplied from lighting circuits of a towing vehicle includes at least one input that is adapted to be connected with the lighting circuits of a towing vehicle and at least one output that is adapted to be connected with the lights of a towed vehicle. At least one switch is provided that is responsive to a signal applied to the at least one input to supply electrical power to the at least one output to illuminate at least one light of the towed vehicle. The at least one switch includes a switching transistor and an overload protector. The at least one switch is responsive to the signal applied to the at least one input to change to a low impedance state to supply power to the at least one output. The overload protector is responsive to an overload condition on the at least one output to turn the at least one switch to a high impedance state to remove power from the least one output.