I've got an issue with my wife's 75 Duster 360. (Dual Ballast Wiring)
Years ago (Like 2004) I put a Mopar Performance Distributor & ECU in the car and from that day on, have NEVER been able to use a 4 pin ECU otherwise the car will crank for days, but will not fire off until the key is returned to the *Run* position.
I recently purchased a HiRev7500 ecu for it, and it does the SAME thing.
If I grab ANY 5 pin ECU's (even from a junkyard car) everything is normal. With a 4 Pin ECU, it'll only fire off in *Run*.
what could be the issue? Is it by design? Is there a wiring issue?
