Question about 1985 Ford Crown Victoria

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Driving down the road my headlights go off and on when i have my bright lights on...also when they go off my dash lights go off too.

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Check under the Hood for a Fuse Relay Box, If your Model has it, Look in it for a Lighting Or Illumination Relay. Replace this Relay and let me Know if you still have the Prob. Please Rate my Solution, I need all the Help that I can Get! Thanks!

Posted on Jan 29, 2009

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1993 subaru rs turbo hand brake abs and battery lights show up and makes a buzzing noise when I'm driving also when I have headlights on it dims down then brightens up when hand brake abs and battery...


if you are saying that the dash lights go dim and bright while driving it could be a loose connection of the wiring harness behind the speedo nacal.

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If you are saying the dash lights and parking lights are out, it could be the headlight switch or a ground problem.

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Where is the fuse for the dash lights . the light are bright with key on. Go dull when the headlights are turned on


That is normal. They go bright because during the daytime the outside light is also bright so the lights compensate for the outside brightness by making your dash lights also bright. When you turn your headlights on it assumes it is nighttime and you don't need to have the brightness to see the dash lights so it compensates for this. If you want them to be dimmer, near the light switch there is a roller button to turn your interior lights on just roll that some and it will either make the dash lights brighter or dimmer.

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There is a circuit breaker inside the headlight switch body. It gets weak over time and use. The breaker is actually mentioned in the owners manual. A new switch is about $75.00 at the local parts store. You must remove the front of the dash to change the switch. Mine would go off and then in about 30 seconds reset and the lights would come back on. I would be driving down the road with my headlights flashing as the circuit breaker opened and closed. New switch = problem fixed.

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