6. Cylinder duster is now a 340 ignition issues wants to start when you let up on the key

It has two ring terminals on the amp gauge, one red and one black. They look to be original
They might have cut and taped the R6D.
1689216572643.png
Not sure what the advantage of cutting it was thought to be.
Leaving it connected provides a second path to the J1, the headlights an dthe fusebox.

Here's some pics of Mark's '74 with the optional wiring and heated back glass. We see they left standard wires in place on the engine compartment side.
https://www.forabodiesonly.com/mopar/threads/65amp-wiring-trouble-shooting.531960/post-1974152714