Abstract: An electronic turn signal and hazard warning flasher of the kind generally used in automobiles. The flasher is composed of a lamp outage sense resistor, a pulse generator, and an outage sense deactivation circuit which deactivates the lamp outage feature of the pulse generator. The lamp outage deactivation circuit, which receives feedback signals from the turn signal lamps, can be installed in a variety of flashers to deactivate the lamp outage feature, and also can take on a multiplicity of forms. In one form, the outage sense deactivation circuit consists of a resistor and a switch control in parallel between the sense resistor and the pulse generator. In another form, the circuit consists of first and second resistors and a switch control.

Abstract: An adaptor for modifying connector arrangements of electrical components in which connectors such as terminals (16) that are electrically connected to a component (14) are located according to apertures (36-40). The terminals, which are already fastened to the conductor, are laterally received into the aperture through channels (42-46) and slots (66-70). Shoulders (48-52) support terminals (16) above the adaptor face (26) and grooves (54-58) determine the angular orientation of the terminals.

Abstract: A system for alternately flashing two groups of signal lamps, as commonly employed for emergency and police vehicles, school buses, or the like, is provided with a lamp failure indicating circuit comprising two separate relay coils connected, respectively, as parts of current load lines to the lamp groups so that each coil normally will act through a contactor to energize a pilot circuit, thus causing a pilot lamp to be lighted so frequently when all the signal lamps are functional that the pilot lamp appears to be steadily illuminated; yet a relay coil will not so act, and the pilot lamp then will flash intermittantly to indicate a lamp outage, when a signal lamp on the load line of either coil does not function. In one embodiment, each relay coil has a contactor of its own in a separate branch of the pilot lamp circuit; in another, the two relay coils act alternately to displace a common contactor in the pilot lamp circuit.