I have a 1999 Suburban that I am trying to wire a 7 pin RV plug on.
My question is about installing a brake controller and auxillary power.
The owners manual says that there is a "Light-Duty Wiring Harness" & an "Additional Heavy-Duty Wiring" harness. The light duty harness is supposed to be a 5-pin harness which I do have. The Heavy Duty harness is supposed to be 8 wires and is not supposed to have a plug from the factory, which there doesn't seem to be.
The manual breaks down what color wire is supposed to go to what. There should be a blue wire, which is to go to "Auxiliary/Electric Trailer Brake Circuit" and an Orange wire, which is for a "Fused Auxiliary Circuit". I found a heavy guage Orange wire and a heavy gauge blue wire, both are loose, but appear to be part of what I would guess is the 8 pin wiring. I can't get power to either of these, should there be? ....or is there a fuse that needs to be installed? I suppose that the blue wire goes under the dash somewhere, so that a brake controller can be connected, but I couldn't find anything on this.
Anyone know where to begin? I have everything else working I just need these two wires.
Thanks