Bypassing Ballast Resistor / Installing Pertronix Ignition
I installed a pertronix ignition in my 1966 Barracuda. The new coil does not need a ballast resistor anymore. Although I read about bypassing in the forum, I still don't have a clue, how to bypass the ballast resistor. That's why I made a drawing with the original wiring diagram. It shoes the wires and their destination...
Is it possible to hook all four wires together...? :)
Thanks a lot
Robert
View attachment 1714947843
This is not correct, here is how it works, 4 wires
1..."Ignition run" power from the ignition switch, IGN1
2... THAT ignition "run" POWER is jumpered with a short jumper and if you look, connects BOTH end terminals on one end of the ballast.
The connectors and ballast is INDEXED as the two resistors are different values. That is the reason for the "U" shaped cutout on one end
3...On the other end, one of the ballast terminals goes back to the box NOT NEEDED unless you have a 5 pin box. YOU CAN remove it.
4..Terminal goes to coil+. This is ALSO interconnected with the ignition switch bypass circuit, IGN2
So you can REMOVE the wire going back to the box, connect the other two together, and use the coil + wire as your new coil+ and power to the Pertronix.
THE EASIEST way to identify the odd wire is likely..........pull the connector off the ECU. Look up a diagram of the Mopar system, and connect an ohmeter to the one wire that leads to the ballast. Now with all 4 wires disconnected off the ballast, remove the wire that shows continuity.
Connect what is left together
