Question about 2000 GMC Safari
Check a few things...
- The bulbs
- Check for ground at brake lamp connectors
- Check your wiring at the connectors for power
- Check for another fuse blown
- Do not hook up the trailer until you fix the ground problem on the trailer
- On some models, there is a module to control the rear/trailer lighting system. There may be a problem in the module.
Posted on Jul 24, 2009
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Posted on Jan 02, 2017
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Right Turn & Brake
Left Turn & Brake
Green- Right Turn and Brake
Yellow- Left Turn and Brake
Brown- Tail Lights
Red- Reverse (Back Up) Lights
Blue- Electric Brakes
Purple- Auxiliary Power
It sounds like your green and yello wires are shorted together somewhere along the length of the harness. I would check the wires on the trailer first. Easier yet, if you have another trailer to connec or access to another to use for testing, connect to it and see if the problem repeats; if it does the trouble is in the vehicle's wiring.
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