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Old 07-28-2013, 09:57 PM
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Default Tail lights problem

I just picked up a 2000 2DR 4x4 Blazer off a friend for cheap. When I hit the brakes the brakes lights come on just fine but when I turn the headlights on only the headlights come on and the tail lights doesn't. What would cause this problem?

Thanks for the advise in advance.
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Old 07-29-2013, 12:31 AM
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Switch malfunction, break or short in the wire, relay malfunction.. it's possible that it could be the bulbs, but I'm a bit skeptical about all four of them going out like that. The brown wire, IIRC, is the one which supplies power to your marker lamps. Test that with a test light or DMM to see if it's getting power to it. If there isn't, start tracing the wires to find a break or short in the brown wire.
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