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1964 1/2 Mustang-12 volt source in start & crank position

924 Views 3 Replies 4 Participants Last post by  Veronica
I am doing a efi swap in my 1964 1/2 Mustang and I am having problems with finding a source that gives 12 volts in both the start and crank position.I was trying to use a ignition wire that was hooked up to a stereo but in the crank position it loses voltage. Would I maybe have to tap into the wire directly behind the key ignition switch?
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you have a ignition output on your fuse block, use it.
Hello. :) The only 12v source for both start and run on your car that isn't constant power is the positive side of the ignition coil, and the wire going to it from the firewall connector, and that's only about 9V in the run position. The 64 1/2-66 cars don't have anything on the fuse box that has anything to do with the ignition circuits. A lot would depend on what you are trying to accomplish here. If you want to hook up an electric choke that would be one thing, but, if you are trying to hook up an electric fuel pump, that would be another thing entirely. :)
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