I need assistance finding where a positive cable on the wiring harness connects to.
Starting system positive cables
One positive battery cable connects from the battery to the starter relay and the other to the starter motor. Of course if you have two batteries there is one that connects the two. See diagram below.
Alternator system positive cables
There are positive cables that come from the starter relay. They connect to the alternator and the fuse box. These cables contain fusible links. See diagram below.