M&H 1970 Challenger 440 Six Pack Modified Engine Harness for ECU

[shawnbo]

I purchased this harness from YearOne.  It said I needed a 4 post Ballast, but the harness isn't telling me the same thing (don't see the classic 2 prong white connectors). I've hooked it up, but don't seem to be getting spark.  Any help would be appreciated.

My set up:
1. Orange Box - ECU
2. OEM Coil
3. 2 post ballast
4. OEM Distributor (yes its plugged in even though I didn't take a pic)

Anyone install these in a Challenger before?   What am I missing.

[Chryco Psycho]

2 prong ballast will work fine with the oraange box ECU as it only has 4 pins anyway the spark problem is elsewhere

[mopardave]

make certain that the ecu and the bracket are getting a good ground to the firewall. If not it the ECU wont work.
what I have done to insure good grounds is to run a ground wire from the ecu to the voltage regulator, easily ran under the cowl screen. bare the metal on the cowl around the screws and make a wire. bolt it on and cover it with dielectric grease.

[shawnbo]

Thanks - I'll be working on it tonight, will let you know what I find out.