Im having a problem with my 83 mustang. The car ran fine when I got it, but I had to replace floor pans, which I had to take out the whole wiring harness to do. Now it wont crank at all, so I started at the battery to try to find my problem, and the run/start wire that comes of the starter relay on the firewall goes to nothing! The previous owner had messed with it and now I cant find out where he had it going to. There is no connector on the end, nothing. Its just laying there on the floor.

Does anyone know where this goes?