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Wiring Problem: 2 Vol, No tone, blend

gerryhoban
August 5th, 2006, 11:14 AM
Hi,
I'm trying to wire up a partcaster with just two volume controls, no tone. In the mid position of the three way switch I'd like to blend between the volume levels of each pickup.
I've gone straight from the neck pick-up to the first Vol Pot, and from the bridge pick-up to the second Vol Pot. I'm feeding the hot output of each pot to the correct switch contacts.
It all works fine, except in the middle (blend) position, either vol pot controls the levels of both pick-ups, not just the one it's directly wired to.
I can vaguely understand electrically why this is happening, but have no idea how to stop it happening!
Any ideas?
Thanks,
Gerry, Dublin

AnthemBassMan
August 5th, 2006, 12:31 PM
-It's because both p'up share a common ground when wired normally. This happens to Les Pauls too. But you might be able to get her fixed using a somewhat modified Lester wiring diagram. I'm not sure how you have it wired, but have you tried wiring the p'up hots to the center lugs, and the selector switch leads to the outside lugs? This might work for you. If it doesn't work, hey I tried.

http://www.dominocs.com/Gibson/WiringLibrary/wiring50sInd.jpg

L8R,
Matt D.

Pete Galati
August 5th, 2006, 12:31 PM
Connect the pickups to the pots, then connect the pots to the switch, then connect the switch to the jack.

This is how I did it with a couple humbuckers:

http://lasttelecaster.home.comcast.net/stewSWwiring.jpg

Ignore how I wired that switch. I used one of those Stewmac switches, and they don't hook up normal. But that general idea should work for you.

Pete

gerryhoban
August 5th, 2006, 12:52 PM
Pete: Hey, That's exactly how I did wire it! (except I had another ground going between the two pot casings). In the mid position of the switch, everything goes to the same ground, & the individual Vol pots start affecting both piukups, which I think is my problem. Thank you for the diagram!

Matt: That's an interesting idea. I was wiring "normally", with hot going in on the edge lug, and out on the centre. I'll certainly try the alternative. Thank you very much!

Gerry.

6942
August 6th, 2006, 04:25 PM
Try making sure you have a common ground point.
If not, you could get a ground-loop induced hum.
Good luck!! Steve