Low voltage at gauge, no charge?

67Dart273 said
Do you have stock wiring, do you still have the ammeter? If so that entire circuit is suspect. The bulkhead connector terminals for the black output wire and for the red ammeter wire, the ammeter itself, in rare cases, the welded splice in the ammeter circuit up near the cluster., and the eyelet connectors at the alternator and at the ammeter., and whatever wiring gets the fuse link to the battery.

Aside from the MSD electronic ignition, it appears to be relatively stock, with the addition of some aftermarket Autometer gauges.
The ammeter is still there and connected, I just put in a replacement fuel gauge with the IVR upgrade, and a new tach so I know this to be true.

67Dart273 said
IF THE accessories, lights, etc, still seem to work OK, then some of that is eliminated. This leaves only the welded splice and bulkhead connector terminals and the alternator black wire and end eyelet.

Preliminary check of the accessories show that everything(with the exception of the pass front signal light group, which wasnt working before) is working EXCEPT for the headlights, but the dash lights, aftermarket gauge lights, and taillights come on when the headlight switch is on, headlights were working fine before.

67Dart273 said
HAVE YOU smelled anything, smoke, heat, etc? That is a clue

I heard a slight "fzzzz" sound behind the dash cluster, and me and the wife both thought we smelled a bit of smoke, and I wasnt sure but I thought I may have seen some in the air.
I think it may be notable to mention that the voltage was low/not moving on my gauge as soon as I started the car, it wasnt until after running it for a few minutes that the sound/smell occurred.
That MAD link has a WEALTH of great information, thank you for this!