Question about 1993 Mazda 929
All tail lights work Except tail lights when headlamps are on. Have turn and brake lights with or without lights on. No tail lights indicator illuminated on dashboard. Only able to locate headlamp fuse under the hood not blown visibly. Would the tail light relay be probable cause for that part of circuit?
Headlight switch probably the problem. One circuit is shutting off when the other turns on. If it was a fuse or relay, it would just turn off...
Posted on May 14, 2014
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Posted on Jan 02, 2017
SOURCE: Lo-beams not working
It may have something to do with your headlights, but my first thought is they are just a symptom of another problem.
I'd check on the alternator. If the ALT fails, a good battery will keep the car running for quite a while. Sometimes the first symptoms are the dimming of the headlights. So:
Posted on Sep 08, 2008
I'm assuming globe means bulb. I have replaced many bulbs that look fine, and that turns out to be the problem. But to stop you from chasing down a problem that isn't there, test the connector that attaches to the bulb. Should be power there with the head lights on. There should be a fuse, and a relay. The fuse is under the dash or on the side of the dash near the door hinges, I'm just not sure if this car would have seperate fuses for L headlight and R headlight. But you should check power first at the connector.
Posted on Feb 26, 2009
Sounds like a bad switch to me. If it was a relay,it would not work period.Not to mention, the switch controls the dash lights too.
Posted on Jun 22, 2009
SOURCE: brake light fuse
Take a look at the wiring to the brake lights. It is quite possible that over the years one of the wires has rubbed against another enough to short out, causing the blown fuses.
Posted on Jul 17, 2009
Tips for a great answer:
The marker lamps
The tail lamps
The license lamp
The front marker lamps are grounded through the turn filament of the respective front park/turn lamp. The front marker lamps light as a result.
The automatic lamp control function turns on the park lamps and the headlamps. This action occurs when the ambient light sensor determines that the exterior lamps should be turned ON based on the amount of available light. When the BCM grounds the park lamp relay, voltage is supplied directly to the park lamps, bypassing the turn/headlamp switch assembly. When this action occurs, the following conditions exist:
The automatic lamp control relay is grounded.
The headlamps turn ON. Refer to Headlights/Daytime Running Lights (DRL) Circuit Description .
The lamps turn OFF when the BCM does not ground the park lamp relay or the automatic lamp control relay. This action is caused by the following conditions:
The available light reaches a predetermined level.
The ignition switch is turned to the OFF position
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