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Headlights Tail and Brake Lights
Dodge Shadow
Nissan Xterra
Chevy Blazer S-10

What could make the brake lights come on when you turn on the headlights on a 1992 Dodge Shadow?

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2008-11-08 19:02:21
2008-11-08 19:02:21

Believe it or not, I have seen this when the wrong bulb is used-or the correct bulb has been forced into the plug backwards. If the wiring has been repaired (look for tape, or connectors) it may have been done correctly. Sometimes there may be a grounding problem also. These lights (rear) will also fill with water, which can cause shorting. If this is the problem, drill a small hole in the bottom of the housing to drain any water (do not reseal it). I had bad grounds on both tail light sockets and back up lights. When ever strange electrical problems happen such as dim lighting, other bulbs lighting that are not suppose to and intermittent turn signal problems, check the ground by using a jumper wire from the grounded part of the socket to a known good ground. If it works fine then it is a bad ground. I soldered the ground wire to the outside of the metal socket. Worked fine.

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