Question about 2004 Dodge Ram 1500

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2005 Dodge Ram 2500 left trailer signal/brake light not working

Had the PCM replaced at dealership, worked for a awhile, now I have the same problem again. Trailer seems not the problem, worked for a long time before that and I did no electrical alterations on it. Truck wiring is OK to.

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06 has a seperate pcm under fuse box. trailer has a dead short. should set code in boby computer under fuse box.get some one with a body scan to reset code and fix short.03's have fuses.not sure about 05's

Posted on Dec 25, 2009

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Check for blown fuse. There is a fuse specifically for those lights.

Posted on Aug 06, 2009

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Check grounds

Posted on Jul 21, 2009

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Wiring problems


Hi Charlie

Six wire plugs:

Horse, stock or utility trailers:
White = Ground - GD
Yellow = Left turn/Brake -LT
Green = Right turn Brake -RT
Brown = Tail and clearance lights - TM
Red or Black (not both) = Battery, aux power - A
Blue = Electric Brakes - S

Ground should be 10ga.
Others 14 ga

Best regards
Mike

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