Originally Posted by Envincibal
Title says it all... I don't want to drill any additional holes in my bass, and was wondering if a single switch could act as a coil tap for both neck and bridge pickup. I know that each pickup coil could not be selected individually (both pickups would be series/single/parallel based on the switch).
The answer to your question is no. It can't be done with a dpdt switch. However it can easily be done. It uses an on-on-on type 4 pole switch.
To see how to do it look up the single coil "K-mod" On G&L L2X00 basses.
That switch changes the mode of both neck and bridge pickups together.
I call this "Leo's last circuit" and I think it's a great way to get a variety of tones out of any two coil 4 wire humbucker pickups which the MFD pickups are.