I will try to do this in writing. If is gets confusing I will work on a diagram and will scan and post it. The stock wiring is set up with the large battery cable going straight to the starter solenoid at a large lug. Tied in at that terminal are some smaller wires that feed power to other stuff. There is another terminal that the purple wire (if your car is stock) goes to. I think it is the "S" terminal on the gm starter. The purple wire becomes hot when the key is turned to the "start" position. Then the starter (if working correctly) will spin and engage to start the car. NOW to the problem. When you look at the heat that we have and the close proximity to the cable coming from the battery (which is hot at all times) it can melt the insulation and ground out the battery. Solution! Install a ford starter solenoid. To do this you need a ford solenoid and another battery cable. Remove the starter from your gn, with it out you need to build a jumper from the large terminal to the "S" terminal. I just took a piece of copper tubing I had in the garage and hammered it flat. Then drill two holes to make the copper pipe to allow it to slip over BOTH studs. Tighten the nut on the small stud to hold the jumper down. Then reinstall the large cable back onto the the large stud. At this point there should only be the large cable on the starter. Reinstall the starter. Now back in the engine compartmant. Mount the ford solenoid. On the ford part there are TWO large studs. One should go to the starter. The other should be connected to the battery. The purple wire that was removed from the starter should be connected to the "S" terminal on the ford solinoid. Now any wires that were connected to the large stud on the starter should be connected to the large stud on the ford solenoid that is connected to the battery. That way they are powered all the time. The end result is power going from the battery to the ford solenoid and to the wiring to power the car, but the cable going down to the starter is dead until you turn the key. When you hit the key the power travels to the purple wire this causes the switch to close between the two large terminals this sends power to the starter that then is sent to the small terminal that the purple wire used to go to and the starter becomes energised and starts the car. When the key is released the cable going to the starter is dead. I got this from an old dirt track guy I used to do chassis work for. It works great. I'v had my car set up this way ever since I installed a new starter. Sorry for the long post. Hope it helps Jon Hanson
