I have the towing package, and am just about finished with the brake controller installation. Unfortunately, the user's manual says "see a qualified installer" in the section about the wiring harness that comes with the truck. Apparently, they can't even tell you which location to plug it into. Probably lawyers.
At any rate, I have the fuse installed in the under hood fuse box, the wires tied in, the only remaining item is taking the factory harness with the connector already on it and installing it in the wiring box in the upper left footwell. Unfortunately, the picture that is attached to the harness itself has a drawing so small no significant details can be made out about specific position within the box.
My question is hopefully pretty simple, which of the available plug locations in that wiring box is the correct location for the harness, or will any of them work ok? I've never needed trailer brakes before, so I just want to make sure not to plug it in to the wrong location and blowing out something.
Any help would be greatly appreciated.