trailering brack wires in rear ?
I have the front wires for trailer brake.
In the back there are 4 for signal and lights.
Without tapping in to taillight wires and running a positive wire from the front is there any wires or plug to pick up the blue(electric brake), reverse wire and a power wire ?
I dont have the sub but is there a power wire (or plug)behind the drivers side rear plastic.
My brother said on other GM trucks there is a plug to add a harness for those 3 wires.
Is there a harness available for the 3 ?.
I prefer not cut into wires.
What does the dealer do when adding the 7 prong trailer plug ?
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H3 gray adventure,brushguard,hood handles,sunroof,steps,crossbows,smokers package,window/sunroof visor,Airbrushed spare tire cover,mudflaps,K&N filter,SS Hummer insert,Hummer rubber mats,cargo rubber mat + shade,12 volt airhorn,eclipse nav/dvd/rear camera/mini remote,autostart,12 volt fridge,high beam garage remote,underhood air compressor, taillight bezels ,clinometer ,trailer brake and hitch.
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