andrewmolles

i have charged the battery and had it load tested ,all came back beautiful..when i install the battery into the car i get a small spark from the lead as i connect it .i have removed all the car fuses and closed the doors and i still get a spark when attaching the leads...this is a basic ( very basic ) wiring with no imobilisers or just straight factory ..any help please

MelWff

you do realize a 65 is a c2 corvette not a c1 and this is the C3 forum.
you are sure there is no non-factory wiring at the battery or fuse box?

emdoller

Thank God. I was getting ready to book a flight to help. Congratulations!!

Ed

BLUE1972

Obviously something is still on, an aftermarket radio, the ignition switch - worn and energizing a circuit, a stuck or jumped out relay.

Bad diodes in the charging circuit can cause this, as can a bad voltage regulator.

Disconnect one thing at a time and see if the draw goes away.

I'm leaning toward the charging circuit , Alternator / regulator.

7T1vette

If all fuses were pulled and there is no aftermarket equipment tapping in to power elsewhere, your problem must be the alternator, power window circuit (if you have them), horn relay and wiring, or something flaky inside the electrical wiring. You can disconnect each one of those last items separately to see if the drain disappears.

BTW, you can do your testing (with the fuses pulled) by pulling one of the battery cables off and inserting your volt/amp/ohmmeter [on 10 amp scale] between the loose cable and its battery terminal. You will be able to read the amount of current drain on that scale. This makes it easy to assess each circuit as you remove/insert it into the car's electrical system.

My bet is on the alternator (bad diode) or something in or around the horn relay.

Go Vette Go

Original post is from 2 years ago. Sure hope he has it fixed by now!

BLUE1972

Soon to be another barn find

7T1vette

I hate it when that happens....