After wiring up my new ignition, and new alternator, I have a problem. The truck (1955 ford f100) starts up, but when i turn the key to **** it off, nothing! I have to un-plug the alternator to shut the truck off. I was wondering if anyone had a wiring diagram of the ignition and all. Im not sure where i have it mixed up.

 

There is a backfeed in your wiring system, nothing big and a simple fix. I had the same problem when I rewired my truck. When I get home in the morning I will get you the exact diode part number you need and it will fix your problem, they are 3-4 bucks for a 4pk at radioshack...

 

Your problem is you are feeding back voltage to the ignition through the alternator. Wire in A 1N-4001 Diode (Radio shack PN 276-1001) between the #1 (might be marked "L") terminal on the alternator and the ignition switch. The "stripe" on the diode goes towards the alternator... very important. Also, if you dont want to use a diode, you can wire in a lamp, 200 ma or greater, use lamp no. 1815, 168 or 194 and appropriate base (socket), which will function like an idiot light and solve your problem The diode is easier. My advice is to solder the diode into a 14 ga wire, heat shrink where you soldered it, bend it back over and heat shrink it again. Just keep track of the end of the wire that the stripe on the diode is on. It wont hurt anything if you hook it up backwards, it just wont work.
Any other problems PM me. J

 

Or you can just attach the exciter wire for the alternator to the acc. side of the ignition switch.

 

Thanks old58, that is exactly what is happening and that is all you need to do to fix the problem. When I rewired my truck thats how the guys from rebel wiring told me to fix it and it worked for me...

 

Appreciate it, ill get right on that.