Question about 1998 Cadillac DeVille

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Tail light is out, brake and turn signal work

My 2002 Deville tail light and front left signal lights are out, brake and turn signal work, bulbs are good, fuses are good, i dont know how to check relays and the cables in the socket do have power, what esle could it be???

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  • Anonymous Mar 30, 2014

    tail and marker lights go on but not headlights think it might be a relay but cant locate it

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Create your own earth wire off the original and screw/bolt to a good earth source.Nothing flash just a test if it works make a more permanant one

Posted on Oct 11, 2008

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1999 Dodge Ram 1500 - Right rear tail light won't burn for tail lights alone, but will still blink for turn signal and light up for brakes. Bulb was replaced with no effect. Left still works.


The bulb has two filaments; one for brakes and turn signal, the other for tail lights. One filament is probably burned out. Replace the bulb with a new one

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That is a three element lamp bulb. Brakes, turn, and tail lights are all in the same bulb. Replace the bulb and all should be OK.

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How do i replace left rear brake light bulb


1) Open trunk
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4) Remove tail light assembly by pulling outward, careful not to break plastic guide/nub
5) Disconnect wiring connectors
6) Remove plastic housing access plate on back of tail light assembly by twisting/turning tabs until they click and then lift access plate from tail light assembly
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2007 chevy impala brake light and left turn signal not working


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Running lights work but no blinkers or brake lights. Changed fuses and bulbs no luck


I'm inclined to believe it is the turn signal switch. When you select left or right, the brake light is removed from that side, and the flasher is connected to the bulb instead, making the brake light on that side flash as the indication that you plan to turn. You have lost everything, but the simple answers check out.

If you have lost signals, brake lights and tail lights, then it is more likely that the ground supplied to the bulbs is not working, since the tail lights share noting in common with the brakes lights and turn signals but ground.

If the tail lights work, the fact that the brake lights and rear turn signals share that switch starts to look meaningful — even more so if the front turn signals also don't work. But the front signals and the rear signals use different circuitry in the switch, so it would be something more mechanical in the switch than electrical in that case.

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Sounds like you need to replace the drivers brake/tail light.

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Hi Ahunley, Sounds like you have cross the connection wires to the unit ( positive to earth & earth to positive) Try swapping the connectors over.

Hope this works.
kind regards
David

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