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“73 Mach One HIE Ignition, solenoid, starter wiring
#11
(08-13-2018, 12:01 AM)icejawa Wrote: The connector that is attached to the distributor actually hooks into the ignition coil which is built into the cap. I just installed one last week and you have to buy a seperate pig tail that plugs into the battery port on the cap. What I did was I spliced the yellow 90 degree connector (that went to the + terminal on the ignition coil of your old system) to the red wire on the pig tail that you have to buy. Heres the part: https://www.summitracing.com/parts/sum-g5211/overview/

So pretty much I spliced the yellow connector on this to the pigtail for the HEI distributor : https://www.cjponyparts.com/cj-classics-...1/p/WGF6C/

The HEI does not work well on the 7v supplied by the original wiring after passing through the underdash resistance wire. The resistor needs to be bypassed so it can receive a minimum of 12V. 14V is even better for consistent operation. Another option to feed the HEI is to use a relay at the starter solenoid, triggered by the "I" wire which is on the same circuit as the original coil.


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#12
+1 on relay. That is what I did so not to hack the original wiring.

'73 Grandé H Code. Headman long tube headers, T-5 Transmission, 3.70 Traclok, Lowered 1" all around, Aussie 2v heads w/ 2.19 intake, 1.71 exhaust, screw in studs, full roller cam 608/612 lift 280/281 duration LSA 112, Quick Fuel 750 CFM double pumper, AirGap intake.

'73 F code convertible. Bright red. Needs total restore. (IE HOT MESS)

- Jason
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