HEI Tachometer Questions
My project car is a '75 Formula. A previous owner added the MSD Super HEI kit (good) but apparently didn't know how to make it work with the factory tach so they put in an aftermarket tach (yuck). So I need a little help getting the factory tach to work by using an MSD tach adapter. I need:
1) what is the color wire that originally connected the HEI to the factory tach? I'm assuming I'll find it somewhere, with the end clipped off.
2) did the factory tach trigger off the coil (+) or coil (-) terminal?
Thanks,
Eric
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