Masotech, Inc.

Draw-tite, Inc. (by Richard Johnson)

Richard C Bryant

Richard B Johnson

An electrical taillight adapter circuit (,) interfaces a three-lamp vehicle lighting circuitry (,) with a two-lamp trailer lighting circuitry (,). The vehicle lighting circuitry primarily includes a group (,) of three right hand lamps (,) and a group (,) three of left-hand lamps (,). These lamps operate in response to signals generated by the vehicle operator, and are electrically connected to the adapter circuit. The trailer circuit generally includes a group (,) of two right hand lamps (,) and a group (,) of two left-hand lamps (,). The adapter circuitry receives electrical signals from the vehicle circuit (,), processes them, and outputs power to the appropriate trailer lamp. This electrical taillight adapter circuit (,) interfaces the nonconforming taillight circuit of a vehicle with that of a trailer, while providing the trailer lamps with improved output current and protecting the system from short circuit conditions.

Tail light adapter between a towing vehicle and trailer

A dual operational and stop light control for adapting combined stop and turn signal lights on a trailer to independent stop signal and turn signal lights on a towing vehicle. The adaptor has a pair of switching circuits, each including a PNP transistor connected in series with an NPN transistor to chassis ground and each transistor connected to both stop and turn signal circuits of the towing vehicle and also to an NPN output transistor which is connected to an independent voltage source to drive the trailer signal lights independent of the voltage at the towing vehicle signal lights.

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Acacto, CA, United States of America

Richard C Bryant