Thanks Garrett for this thread. A great resource for information.
I have a question I hope you can help answer. I've searched for this info but have found nothing. I have an '88 Custom with original wafer rotary and sweet switch. I enjoy all the positions except for #9 Power out-of-phase. Hate that sound. I see that I can get a different sound (looks like Tele-like middle position sound) if I convert to the 91-94 version. What I'd like to have is both humbuckers in parallel, like a Les Paul middle position. Any way to get that?
Also, the diagram for the wafer switch is intimidating. What am I looking at, the side of the switch with the three layers? I will study the actual switch and compare and see if I can get oriented with the wires. Looks really fussy to change, but I am willing to try to get five usable positions instead of just four.
Thanks for any help you can give!
I'm not very familiar with rotary switches. Since you're dealing with an '88, I'd probably remove the original switch and stash it somewhere for just in case.
Modern 5-way rotary switches work like a bladed 4-pole super switch, but with the connections in different places. Guitar Electronics has them, and I think this diagram is what you want. You get each humbucker, the inside/outside combos, and both humbuckers.
I would solder all the jumpers with the switch outside of the guitar to make life easier. That way you just have to connect the pickups and volume pot with the switch in the cavity.