Frenchy305 said: (quoted from post at 20:15:26 05/18/15) I converted my Allis Chalmers C tractor to 12volt and added a one wire alternator but I left the 6 volt starter in, so it spins the engine very fast. But I did have a terminal soldered on the started to I could do away with the mechanical start switch and I added a starter relay and key switch to turn on the ignition and start the tractor. But for some reason the way I have it wired, the starter takes all the current away from the ignition when I try to start the tractor. I have to let off of the starter for the tractor to start. How do I wire the ignition, starter relay, and alternator to keep this from happening?...thanks.
you have it wired wrong. On a points ignition system there are two wires that power the ignition. One supplies a full 12v while cranking and usually connects to a terminal on the starter solenoid and goes directly to the coil. The other connects to the ignition switch "I" terminal and goes to a ballast resistor and then to the coil. The first wire only supply's power to the ignition while the starter is engaged and the second wire only supplies power when you let off the key. So it sounds like you have only the second wire connected properly.
This post was edited by Txturbo at 03:52:25 05/19/15 2 times.
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