no headlights or anything+upgrade alt question

When adding a big alternator to a mopar system it is always a good idea to fix the charging circuit path. There is no reason to send all of that current into the cabin & back out if it is not needed in there.

With a big alternator the OEM wire from the alternator, through the various connectors all the way to the battery is a fire waiting to happen. That is the reason I replaced the wire in those pics with a larger cable.

60 amp alternators are antiques now. Even a small denso from a D100 is a 90a unit I will be mounting a 145a unit on the 318 this month to replace the 37a antique. I actually have a 275a unit laying here for a customer that would fit.

If you add a 100a alternator to an A body, I would recommend adding a second wire directly from the output stud on the alternator to the battery positive. At least 10 gauge, and 8 gauge would be better. This wire is installed to supplement your OEM harness. Keep the OEM circuit in place as well. This will serve as a crude current shunt, and keep your system alive while you work out the other details. If you wind up with something like CS144 alternator, an 8 gauge wire is absolutely necessary - in addition to your OEM circuit.

B.