Control circuit for vehicle lights - has single magnetic switch located in field of coils in lamp supply circuits and interlock to operate warning light on engine starting

摘要

The lamp failure circuit has a single magnetic switch in the fields of a series of coils (5-8) in the separate supply lines to the lamps. The coils are set in opposing pairs so that when all the lamps are operating, then the field is zero. A failsafe interlock has a separate coil to activate the warming light every time the starter is operated, so that the driver is aware of the operation of the circuit every time he uses the car.