I purchased a 1980 last summer and discovered that the instrument panel in the center of the vehicle (above the radio) was having problems. I took out the center portion of the dash and discovered that the instrument circuit board was missing and the wiring was all 'hard wired' to the individual gauges. This includes the oil, gas, voltage, etc.

I have purchased a circuit board and a replacement for the 'clip' that plugs into the back of the gauge panel. The clip is approx 1 inch wide and 3 inches long. It has 12 spots for wires. 8 of the 12 are currently occupied with wires. The spots that are occupied with wires are 3,4,5, and 6 on one side, and 7,8,9, and 10 on the other side. Therefore spots, 1, 2, 11, and 12 are not occupied.

But here is the problem/questions. The replacement plug that I have does not have matching colors to the colors of the wires in the vehicle. Unfortunately, I am not sure what the wires in the car go to. Obviously, I don't know what the color of the wires on the replacement plug are for.

I have looked for manuals, books, wiring diagrams, etc. But I can't seem to find anything that helps me figure out what each of the 8 wires in the plug are for.

If anyone can help, I would really appreciate it.

Thanks,

GHOOD

 

I had to replace the connector you are refering to plus trouble shoot some electrical issues. My wiring is not original so some of the colors may not be correct. I listed a few questions marks where I'm not sure of my notes but I think I got the correct circuit numbers which you can trace back to the correct wiring colors. Email me with any questions.

The connector has a slot on one side that is not on the other. For orientation purposes, assume the slot is on top.

The left column of the connector with 6 wires starting at the top going down...

1- ground (black), circuit 150
2- temp gauge (green), circuit 35
3- seat belt (yellow), circuit 237
4&5 - something to do with check engine (possibly closed carb loop circuit) mine is not connected, circuits 39 and 49
6- don't know function but I think this is an orange wire, circuit 40

Right side column...
7- instrument lights, (gray), circuit 8
8- not sure but wire is pink/blk, circuit 39C
9-gas tank gauge and idiot light, tan/red?, circuit 30 and possibly 10
10-fuel gauge ground, black, circuit 150
11-alternator, brown, circuit 25
12-oil pressure, dark blue and light brown?, circuit 31

 

Give this website a try! It's got a lot of schematic/wiring diagram information!

http://iotech.no/corvette/technical/...tics/index.htm