I own a Fender Telecaster. The guitar plays great and all but I never really liked the pickups. So I decided to get a set of Custom Shop Texas Specials and replace the original ones. I have done this many times so I I thought no big deal. One difference between regular Tele pups and Custom Shop ones is that on the neck pickup, with the regular pups the metal cover is grounded together with the pup ground at the pup, wheras on the Custom Shop ones the pup has 3 wires, one of which is from the cover.
My original intent was to just take and rewire the the new pup as the old ones and just ground together the 2 wires on the neck pup. Once I got the pups, they came with schematics and I noticed that the wiring was completely different than what was on the guitar, so I rewired it per the instructions.
One thing I was not sure about is that on the original wiring they had the ground from the jack and the ground from the pups all soldered together on the back of the volume pot including a wire from the metal bridge. On the new wiring, the jack ground is soldered to the capacitor to the back of the tone pot, the ground from the neck pup is soldered to the switch and the ground from the bridge pup and the ground from the case are just shown as grounded, but it does not say to what. So I soldered them with the ground from the jack and I also soldered the ground form the bridge with all this.
Now here is the problem, when I plugged the guitar in, everything works BUT... it's a hummer. If I touch any of the metal parts it gets quite... GROUND LOOP. It did not do this before. I think that maybe the grounds are not soldered to the right thing.
find the diagram that most closely resembles yours (before the changes)
i suspect, if you move the ground connections to the back of the volume pot, or to the "low" lug on the volume pot (the one the tone cap is connected to), 90% of your hum will go away.
you'll be back at stock.
if you want to improve on that, the "beast's cousin" would be the next step.
I was going to rewire it back to stock and then go from there, but now you have me intrigued. The back of the volume pot has a wire from on of hte volume lugs (and from one of the pup selector lugs. Are you saying to solder the ground to this as well? There is no cap connected to the volume pot anymore, based on the CSTS schematics.
Well, I got a new switch and reqired the whole thing based on the James Burton wiring. Incidentally, the wire I used is cooper, not the silver stuff that the guitar comes with. I hope all will be well (may get some corrosion!?!).
Anyway, after the rewiring, the guitar is just as loud, so I could have left it alone .
Thanks for everyone's input. I may get some foil and do the quiting part to it...