GM style HEI

OK. In these Mopars there is only one source for switched ignition under the hood and it entails TWO wires

IGN1 or "ignition run" usually dark blue, comes out through the bulkhead, is NOT fused!!! and feeds the ballast, the VR, the alternator field, and some smog doo dads if equipped, as well as electric choke if used.

BUT THIS GOES DEAD when starting.

The starting voltage---to the ignition system is........

IGN2, normally brown. It comes of a separate, dedicated contact on the ignition switch, and feeds to the coil+ side of the ballast resistor

SO if you are installing an igntion--like HEI--that does not use a ballast, you must jumper the IGN1 and IGN2 together--without separating the other stuff it feeds......and hook that to your new ignition

"The easy" way to do this is to jumper the ballast connector terminals together and then connect the original coil+ wire to the new ignition.