WTF Wiring
Fleet Mechanic
Joined: Jun 2013
Posts: 1,895
Likes: 32
Posting Guru
Joined: Aug 2010
Posts: 1,761
Likes: 8
From: Knoxville, TN
Yes, there is an external wiring harness in the Duraspark system. This gets the electronics out of the way of all the high-voltage arcs, etc. that are going on inside the distributor cap, which from an engineering perspective is a very good thing.
I don't dispute that HEI systems have fewer external wires.
I don't dispute that they can work reliably.
I just don't think that the solution to every problem that touches on the ignition system is to rip it all out and replace it with a big ol' honkin' GM system instead.
(In this case, of course, it may be easier than figuring out WTF the PO did with the wiring if he doesn't care about originality, though I'd be kind of afraid not to re-do all the wiring at this point anyway.)
I don't dispute that HEI systems have fewer external wires.
I don't dispute that they can work reliably.
I just don't think that the solution to every problem that touches on the ignition system is to rip it all out and replace it with a big ol' honkin' GM system instead.
(In this case, of course, it may be easier than figuring out WTF the PO did with the wiring if he doesn't care about originality, though I'd be kind of afraid not to re-do all the wiring at this point anyway.)
Fleet Mechanic
Joined: Jun 2013
Posts: 1,895
Likes: 32
Ehh, I admit I enjoy rubbing salt every now and then
Fleet Owner
Joined: Dec 2009
Posts: 20,678
Likes: 83
From: NorCal
I'd exorcise the aftermarket and off-year demons and then pull fuses to isolate the defective system.
Then, I'd visually check the circuitry and verify signal voltages based on off/ignition/and start positions.
2x with Pertronix but the OP should start with a known good baseline.
Then, I'd visually check the circuitry and verify signal voltages based on off/ignition/and start positions.
2x with Pertronix but the OP should start with a known good baseline.
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