Fuel Gauge reads full when truck is off! Help

[71CHEVYSHORTBED402]

If it helps..........This is per my gauge cluster:

The following descriptions are in order 1-12 per the cluster connector:

1. 18 AWG black & white: For alternator. This wire runs down to the fuse box.

2. 20 AWG tan: For brake warning lamp. There are two tan wires on the #2 connector point. One wire runs to the ignition switch and the other down to the fuse box.

3. 20 AWG pink: For fuel gauge feed. This wire runs down to the fuse box.

4. 20 AWG tan: For fuel gauge. This wire runs down to the fuse box.

5. N/A

6. 20 AWG dark green: For temperature gauge. This wire runs down to the fuse box.

7. 18 black: For ground. A clip on the end slides into the sheet metal behind the bottom RH (TS) corner of the gauge cluster panel. It's positioned to the RH (TS) of the hole located on the sheet metal.

8. 20 AWG gray: There are two gray wires on the #8 connector. One runs to the RH heater lamp. The other is for the cluster lamp, which runs down to the fuse box.

9. 20 AWG dark blue: For RH signal lamp. This wire runs to the turn signal connector.

10. 20 AWG light blue: For LH signal lamp. This wire runs to the turn signal connector.

11. 20 AWG light green: For dimmer switch. This wire runs down to the fuse box.

12. 18 AWG black (Perhaps black and brown): This wire runs down to the fuse box. Apparently this wire routes from the firewall block to a "4 amp inline fuse", and then onto the junction block.


More simple. I believe Vette made this up. It's varified: