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Pertronix with Carbs + Electrical

Hello Forum,
I have a 1974 914 2.0L that I've recently rebuilt into a 2056. I'm having issues with the pertronix unit That I've installed and getting constant power when in the start position. What I have hooked up is the black/red Striped wire to the positive side of the coil and the Black/purple striped wire to the negative side of the coil. When I turn the key to the start position I loose voltage to the + side of the coil. The negative side of the coil is the same thing no power. What am I missing.

Before the rebuild the PO had removed the FI and installed the Carbs along with an MSD 6A and am empi 009 points distributor. My understanding is that I was to remove all of the MSD as it's redundant with the pertronix.

I'm at a loss of what to do here. Any input would be appreciated.
Old 09-15-2017, 07:55 AM
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Sounds like you may have a bad ignition switch.

--DD
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Old 09-15-2017, 09:07 AM
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Thanks Dave, how do I start to even trace that?
Old 09-15-2017, 09:51 AM
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Hi Dave,
Thank you for that suggestion.
I found the article on how to replace the ignition switch on the bird.
I might be answering my own question here but I'll explain as best I can. When the PO installed the MSD 6A a number of years ago, They ran a wire from the FI 4 post connector(see attached) and crimped it in with the black/red striped wire that was then spliced into the MSD box.

My theory now is they knew the ignition switch was dead and used this as a means to override it. what would stop me from doing the same thing to test and see if I can get the car to run until I get a new ignition switch from the bird?

Old 09-15-2017, 10:41 AM
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I don't know where they ran the yellow wire to. You will have to trace it. The terminal it is hooked to should be hot while the starter is cranking, and not connected at all other times.

The brown wire seems to be the popular jumper to ground so you can use the fuel pump relay to run the fuel pump off the ignition switch.

--DD
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Old 09-15-2017, 09:03 PM
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