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When you plug your boat trailer light to your 2006 GMC sierra the lights on the trailer will not come on if you use another truck the lights will work where do you look is it a fuse or a circuit break?
Wiki User
∙ 14y ago
IF the lights [tail, turn, and brake] are working on your vehicle, AND the trailer lights will work on some other vehicle, that confirms:
- That the problem is NOT in your vehicle's wiring system.
- That the problem is either in the trailer wiring, OR is caused by the IMPROPER connection of the connector plug wires to the wiring of your vehicle.
It is critical that the connector plugs [on the vehicle and the trailer] are properly connected to the correct wires.
The fact that NONE of the lights work when connected to your truck suggests that the defect is related to the GROUND wireas that is the only wire common to all the different light circuits.
Wiki User
∙ 14y ago
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