Electrical Troubles - C10 Chevy 1971

[drivingslow]

Dear Board,

Outstanding reading your various posts over the last week.

Very helpful.

I used to post long ago on a 62 Chevy Bel Air board.

I now picked up an interesting Chevy C10, and after some work, had it running smoothly for 8 months.

A 350, automatic, 2wd, etc.

The P-Owner unfortunately spliced a number of items into the electrical.

So suddenly on a colder night, the pickup would not turn over the following day, after running perfect.

Would not even make a 'click' with solenoid jump. Battery tested perfect. Found it to be a major ground problem. Tested with a 'poor man' jumper cable to negative battery terminal, to frame for a real ground, and it started right up.

After cleaning several grounds, having the truck start up fine again, with headlights working, noticed heater fan switch, turn signals, hazard, cig lighter, only produces a GEN ALT light. not working at all...

Tried repeatedly to find the short, or ground problem, but simply cannot.

Any ideas?

your help would be greatly appreciated.

is this just a failure to ground in the dash?

thank you.