Hei conversion Intermittent start?

Here is the simplest diagram possible. Make sure the wires from the distributor to the module are correctly connected, it does matter!

The module is mounted, and thus grounded, to the car body. Just like the original mopar box, it won't run without a good ground!

Hook the hot wire directly to the battery, as shown, completely bypassing the ignition and ballast circuit. Do not use any of the original mopar wires, exept the plug coming off of the distributor. Use new wires between the coild and the HEI module, and new wires from the distributor connector to the HEI. A new wire jumper to the battery positive as well. BTW, the engine won't stop when you switch off the ignition in this configuration, you will have to unplug the hot wire from the battery.

If it won't start like this, there are 5 possible solutions, as far as I can see:

1. You have a bad coil

2. You have a bad distributor:
a. Reluctor is hitting the pickup, and/or is magnetized
b. Reluctor/pickup Air Gap is wrong
c. Pickup is bad

3. You have a broken wire or a bad connector - I had an intermitent one on the original 2 prong connector to the distributor.

4. You have a bad module

5. You are not following the schematic.

If it runs fine with the Mopar box, and a switch back and forth to the HEI won't run, you can probably eliminate 1 & 2, and maybe 3.