More Electrical issues on my 77
Thread Starter
Instructor
Joined: Feb 2023
Posts: 111
Likes: 16
More Electrical issues on my 77
I hadn’t driven my new 77 until tonight and when I turned the lights on the volt meter went from 13v to under 8. Once I turn the lights out it bounces back to 13. Any quick checks?
Also while I was out driving yesterday I noticed my oil pressure gauge had moved all the way to the right. I looked 5 min later and it was reading again. When I went for a drive tonight it was fine and then I looked down and back to all the way to the right. This time it stayed there and didn’t go back even when the car was turned off
Thanks
David
Also while I was out driving yesterday I noticed my oil pressure gauge had moved all the way to the right. I looked 5 min later and it was reading again. When I went for a drive tonight it was fine and then I looked down and back to all the way to the right. This time it stayed there and didn’t go back even when the car was turned off
Thanks
David
Thread Starter
Instructor
Joined: Feb 2023
Posts: 111
Likes: 16
Went out to ground the wire out on the pressure gauge and when I turned the key on it went from the far right to the far left and when I started the car it worked…….who knows.
While out there I put a volt meter on the battery and it read 13 volts, turned the car on and it went to 14, turned the lights on and it stayed at 14, not under 8 like the gauge reads……who knows
While out there I put a volt meter on the battery and it read 13 volts, turned the car on and it went to 14, turned the lights on and it stayed at 14, not under 8 like the gauge reads……who knows
Melting Slicks
Joined: Feb 2018
Posts: 2,329
Likes: 725
From: Marietta GA
Start with checking and cleaning the large ground wire from the battery. If you plan on doing work on your car purchase a Chevrolet Service Manual for a 1977 model car, it will have a wiring diagram. Poor grounds will cause intermittent problems and can be extremely hard to find. A lot of guys will start by cleaning/ inspecting the ground wires going to each lamp / assembly. Good Hunting.
Thread Starter
Instructor
Joined: Feb 2023
Posts: 111
Likes: 16
Start with checking and cleaning the large ground wire from the battery. If you plan on doing work on your car purchase a Chevrolet Service Manual for a 1977 model car, it will have a wiring diagram. Poor grounds will cause intermittent problems and can be extremely hard to find. A lot of guys will start by cleaning/ inspecting the ground wires going to each lamp / assembly. Good Hunting.
I guess the up side is the battery is still being charged when the lights are on despite what the gauge says
