Ohhhhh, ok. Well, go to a hardware store with the pot and get 2 uninsulated ring terminals. Run a wire (crimp and solder), at least 3-4 inches or so, between both ring terminals. Put one on the pot shaft and mount the pot on the pickguard or body, and then solder all your ground wires to the other ring terminal.
JK Any decent electronics store (and some hardwares stores also) should have "ring connectors/terminals" available in a variety of sizes. I'm guessing that you will need an inside diamater of about 3/8" or 1/2". Be sure to measure the pot first.