Join Date: Dec 2002
Location: Saint Louis, Missouri
Re: MSD Wiring HELP
There should be a wire (which I'm guessing is the one you are referring to that says goes to the key switch) and this one turns on and off the system. I would look to see what it requires for voltage. Most older points systems had a full 12 volts going to them when the car was cranking and was reduced through a resistance wire or clay resistor to a lower voltage when the key was put into the run position. If you used the factory coil positive wire it may turn the new ignition system on while cranking but when the key is turned to run it may shut off as it is not getting enough voltage.
1974 Spirit Of America Nova (being restored), 1973 Nova Custom, 1968 Chevy II (Garage Find 2012)
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.