Automatic headlight and parking light switching

Details Automatic headlight and parking light switching Automatic headlight and parking light switching

1988-03-21

1990-01-23

LaRoche, Eugene R.

Electric lamp and discharge devices: systems

Special application

Vehicle

315 76, 315 77, 315 80, 315 83, H01K 700, B60Q 126, B60Q 102

Patent

active

048960756

ABSTRACT:
Turning on either headlights or parking lights pulses a first control circuit and energizes a relay, closing normally open contacts in the light circuits. The closing of the contacts energizes a second control circuit which holds the relay on and supplies power to timers. Turning off an ignition switch starts a short headlight timer and a long parking light timer. The timers have outputs connected to disable the second control circuit and to thereby de-energize the relay. The output of the short timer is grounded through the headlights when the headlights are in a low resistance off condition.

REFERENCES:
patent: 3373312 (1968-03-01), Conn
patent: 3389296 (1968-06-01), Carruth
patent: 3544838 (1968-06-01), Carruth et al.
patent: 4301390 (1981-11-01), Earle

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