Question about 2006 GMC Sierra Denali

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I have a 05 Yukon pulling a horse trailer. Have brake controller installed. All lights work except interior lights on trailer. Hooked to another vehicle- works fine. No voltage coming from pin on 7 point connector. Anyone know which fuse this might be and where it may be located. Manual says fuses under dash, left of steering column- huh? don't see one. Thanks!

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  • Anonymous Mar 25, 2014

    Pulling tandem axle trailer with electric brakes, only pin that has no power is for 12V accy power....Where does the power come to hitch female plug?

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