'84 F-100 bass pot not working

[Tundra]

I have a c. 84 F-100 II. The bass pot doesn't do anything. I checked to see if there was look wire but things looks okay. I can see the finger moving in the pot when I turn it. I guess I can clean it before I re-solder the connections. The treble pot works fine. I played with all the switches and the bass pot does not respond. I thought pots were fairly robust and last forever. Any suggestions will be appreciated. Thank you in advance.
Hubert

[Craig]

You might check out the wiring diagrams and picture diagrams we have in the Gallery: F-100 Wiring Schematics and Picture Diagrams.

Might just need a some contact cleaner.

Hope this helps.