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67dart273, I followed what you outlined and found some bad wires and connections. The ground on the ecu wasn't good too. I cut out the bad wire fixed the connection and ran a groung wire to the ecu. The main problem was virtually no voltage at the coil side of the of the ballast resistor when...

I'll check the ground. I feel the ecu is bad but checked good at the autozone. I hope that 2 car can get it done at homestead.

How much voltage should there be at the coil? Does the black and yellow wire on the negative side have voltage or just the brown positive wire? Would a ground wire straight from the battery to the ecu case work?

I have a 74 duster 360. After a long battle of electrical problems I had it running good except for a high rpm miss. The electrical problems were in the wiring. A lot of the wires were brittle. It used to miss real bad at much lower rpm and alot time it wouldn't fire until I went under the hood...