90 Loyale Kickdown wires fried! HELP

Anyone have a clue as to where the wires run to that go to the Kickdown relay that is up under the dash, above the glove box? The fuse blew on my 90 Loyale and I put it in D-Check to see what was up. By a process of eliminations, I was able to isolate it to the Kickdown relay (when it disconnected the fuse will not blow). I pulled apart the wires as far as I could (the bundle goes into a plastic routing tube and I found severa spots where the black/white wires has melted the insulation of the blue and blue/green wires (4 total) that go the the relay.

Note, this is a Auto to Manual trans conversion, but I don't think that is the problem. I think I will have to pull the dash to confirm the short's location and to ensure there are no more damaged wires.

Any idea on what year/model Subaru's may be interchangable?

Any thoughts on why this happened?

Thanks Larry