64 Valiant charging and lighting/gauge issues

The ground "catch all" is over used LOL

The electrical system pulses.

This can be a number of things. It is often a bad connection in the harness causing the thing to form a slow oscillation or feedback. It can be a bad (going bad) original mechanical/ relay type voltage regulator. In rare cases can be the battery


None of the dash lights work but fuses are good.

The dash light circuit is a "trick." The power for the dash lamps comes from the tail / park circuit so they must work "first." That power is routed in the headlight switch through the dimmer control (twist to the left) and then fed down to the inst fuse in the fuse box. So the lights must be on, the tail circuit must be working, and the dimmer must be "some to the left" for that fuse to have power. If it has power and the lights still don't work, it's in the cluster............bad connections, bad bulbs, bad sockets/ connections


None of the gauges work expect for the amp (sometimes)

Ammeter: This could be because the gauge is "sticky" or it might be that the charging system is not working correctly. Normally, when the battery is charged/ normalized, the amp gauge should pretty much remain centered

Other gauges: I BELIEVE that year had the instrument voltage limiter/ regulator INSIDE the fuel gauge. Start by doing a search on this board there is hundreds of posts on gauges.

Go to MyMopar and download the closest year you can find for a service manual, and the aftermarket wiring diagrams there.