[FirstOwner69]

It also served as the attachment point for the hot wire included with the optional camper harness. The wire was then routed along the top of the radiator support to the left inner fender. The wire then joined the other camper harness wires at the firewall. They were then routed rearward together.

It's the 10 or 12 gauge red wire in the pictures.

I don't know how this varied when the dual battery option was also ordered.