Ballast resistor

Did get the electronic ignition version from Year One, (Part # HU258AM) or the standard (points type) version (Part # HU258A)? With the black box ignition shown in an early picture, you should have HU258AM. I believe that harness uses the four pin ballast, the flat voltage regulator and has both field connectors on the alternator connected to the wiring harness. At least that's how their harness for my '64 Dart was modified.

In that picture of the Chrysler ignition, there is a round black device to the right of the ignition. What is that? I don't recognize it - is that the mains switch you referenced?

Lastly, here's a picture of the wiring on my firewall before I got my harness from Year One. My car is a 64 Dart and your Barracuda might be different. Point being your ballast should mount somewhere in that general area, maybe further to the right like someone posted. My ballast is the white gadget shown just to the left of the distributor. I hope that helps - don't hesitate to ask about anything that isn't clear.

ATB

BC