Abstract: A vehicle-to-trailer light-connection verification tester (10) designed to be located within a towing vehicle (20), a towed trailer (30) or within a cable adapter (24) that is connected between the vehicle (20) and the trailer (30). The tester (10) features an electronics circuit (12) that includes a plug (P1), a receptacle (J2), a three-position mode switch (S1), a plurality of isolation diodes (D1-D4), and a loudspeaker (LS1). The mode switch (S1) has a vehicle test position V, a trailer test position T, and a normal lighting position N. When the switch (S1) is in the vehicle test position the rear vehicle lights are tested and when the switch (S1) is in the trailer test position (T) the rear trailer lights are tested. If each light in either the vehicle (20) or the trailer (30) is operational the loudspeaker (LS1) produces an audible sound. Conversely, if a particular light is not functioning no sound is heard.

Abstract: A rotary motion powered system for energizing light emitting diodes is taught that utilizes a permanent magnet generator (20) located within a vehicle wheel (64) for producing the requisite electric power. The generator consists of two main elements: a rotating portion (26) and a stationary portion (28). The rotating portion utilizes a base (30) that is attached directly to an adapter base (72) attached to the vehicle wheel, and the stationary portion includes a counter weight (62), thus permitting this portion to remain horizontal when the wheel is rotating. An ac/dc bridge rectifier (22) is in electrical communication with the generator output to change the alternating current produced by the permanent magnet generator to direct current. A number of light emitting diodes are disposed within a vehicle wheel member and are powered by the direct current power, thereby producing an unusual and unique visual effect when the wheel is rotating.