Racecsrgovroom

Hello. Noobie here on the form and to corvettes. Little back story. I work on race cars so easy stuff there. My boss is having me work on his 76 corvette. Its been sitting for about 3 or so years now. Ran when parked but had a few electrical issues. He said all it needs is a battery to fire up. Okay replace that. Turn key no power at all. No lights on dash no fuel pump no nothing. Found a few wires and plugs are melted. They are the ac power wires that up and over from left sides to right side. Said okay its just ac dont need that right now. Clip snip tape tape. Made sure they arnt gonna start a fire. Okay cool maybe power now. Nope nothing.

Grounds are okay around the car cleaned a few up a bit tried again. Nothing. And now im stumped because race car dont have all this extra wiring. What should i be looking for in order to get power to the car.

randallsteel

Check the fusable link near the starter

Eliredandblack

Corrosion on battery connection to frame.

Racecsrgovroom

starter has 12 v going to it finally. But im guessing now there is no power from igniton switch. It also looks likenthere may be a connection in the fuse panel for the battery that is missing.

Racecsrgovroom

cleaned it ealier today. Still no power at igniton switch or fuse panel. Seems the fuse panel is missing the connection for the battery hook up on fuse panel. Looked for thw wire cant find it under dash. Can hardly find info online for the fuse panel

mikeb

Check here for wiring diagrams.


https://www.corvetteforum.com/forums...or-anyone.html

EmptyBank

The fuse panel gets its power from the fusible link which is connected to the positive lug of the starter.

carriljc

Racecsrgovroom
Did the 76 come with the goofy seat belt/start interlock? If it did this sounds suspiciously like something to look at.

randallsteel

only 1974 and some early made 1975

Bikespace

Try a wiring diagram!

If there is 12V at the starter, but "nothing" in the car, it is likely the fusible link at the starter.

https://wordpress.keystonestatecorve...m/?page_id=118
Oddly, the 76 diagram is missing from that site. Perhaps 77 is close enough?

Trace out where you do have power, and it should be obvious where the break is. Do you have a test light that can pierce insulation?

Jasonsvette

Like others hsve said.....check the fusible links. There are two- one for the headlights, one for everything else. They basically protect everything between the battery and the fuse box. If the entire car is dead, but the headlights work, the link has burned up.

If you have power to the starter and the purple wire on the solenoid has power when the key is in the "crank" position, then the starter is bound up. In this case you can try banging on the starter with a hammer while someone tries to crank it over. Just be sure it's either in neutral with the E brake on or in park.

If there's no power at the purple wire, and it's an auto, try wiggling the shifter or the bowl of the column. If it's a stick, try looking at the clutch safety switch. You basically get power to the purple wire from the ignition switch. The switch could be bad or out of adjustment

palmbeachvette76

I had the same thing happen while driving and it was the harness to the ignition switch on top of the steering column that had vibrated loose. Replaced the switch just to be safe and haven't had a problem with it since.