1977 Chevy K10 Printed Circuit Question

[NW Task Force]

I am replacing the original printed circuit on the backside of the dash cluster. My truck is a factory 4wd K10 and has the 4-Wheel Lock indicator light on the dash. This light has never worked and did have a bulb socket plugged into it. My question is: The replacement printed circuit does not have exposed copper ring for a light bulb to work. My stock printed circuit also looks like the copper ring around the bulb hole is non existent. Without this copper ring to make the connection for the light bulb, how can it possibly work?

[kipps]

I'm sure the plastic can be peeled back to expose the copper if you want it to work.

Do you have the necessary wiring coming from the transfer case?

[ray_mcavoy]

Although the printed circuit has traces leading to that bulb location, they weren't actually used for the 4 wheel drive indicator light.

Instead, the 4 wheel drive indicator light uses a bulb socket with it's own wires. If you look around in the dash you should find a bulb in a plastic socket with 2 wires (white and brown with a white stripe according to the factory wiring diagram).