Heres the deal. I built an 87 K5 out of parts and I can't seem to get my Gas hand to work. I bought it with no wiring what so ever. Everything else works fine. This is what I have: This K5 is NOT fuel injected. 88 carbed 350 87 fuse block (inside and under dash) from a 4x4 truck that had dual tanks 87 gauge cluster 83 fuel tank 86 firewall out wiring (I added wires and moved them to match that of an 87) For some reason what I believe to be the fuel gauge wire now comes from the rear wire section of the block. I know that on pre 87 it was a pink wire from the main wiring section. Any help or ideas would be great. I've got a good ground from the tank to the frame and a good connection to the sending unit. Its just not registering anything and the tank is full.