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Troubleshooting No Power On T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118451  

Question:

Purchased kit for 2011 Acadia installation was a breeze however tried testing connections and no power...any ideas?

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Expert Reply:

I would start checking fuses and relays on the power block in the engine bay. The cover should have a map or listing of all the fuses. Check all of the fuses that have anything to do with taillights or tow circuits. I have added a link to a wiring FAQ page that shows which pins should serve which function. Use the circuit tester like # PTW2993 to make sure everything is on the correct pins.

expert reply by:
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Chris O

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