fourfourto
11-25-2007, 03:43 PM
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 ?
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 ?