Hei conversion troubleshooting

GTS Dave said

I already tried that, the 71 Duster/Valiant wiring diagram doesn't show the ECU electronic ignition. The ignition switch doesn't show individual terminations at the key switch. Nothing shows the function of each wire. I currently have the 4 pin ecu - single ballast resistor setup. Thanks

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Easy. Look at your wiring diagram, the ignition switch and bulkhead connector. They normally are called IGN1 and IGN2. The whole deal is, IGN1 is tradtionally "ignition run" and GOES COLD during starting. IGN2 is the coil resistor bypass, often a brown wire, and goes from the igntion switch to the coil+ side of the ballast resistor. It is the ONLY source of igntion voltage during starting, and (normally) supplies the coil during cranking, and "feeds backwards" through the ballast resistor to feed the ECU

If you are bypassing the ballast, those connections must be tied together, then run to feed the ignition system and VR, and on 70/ later cars, the altlernator blue field.

Go to MyMopar and download a service manual I WOULD NOT recomment bypassing the ballast on a Mopar ECU