Well, I've scoured the Internet--mostly guitar-related forums as well as pickup manufacturers--and still I cannot for the life of me figure out which type of pot I need for two different audio effect applications. As far as I can tell, there are four types: SPST, SPDT, DPST, DPDT
Here are the two modifications to a wiring harness I'd like to make:
1. Three-pickup guitar and all three pickups simply have two wires: one "hot" lead and a ground. Two of the pickups are connected to the same switch connection (neck and middle). Which type of pot would I use to engage the middle pickup optionally while maintaining constant connection of the neck pickup (regardless of whether the middle pickup being used or not)? I am assuming I can leave the constantly active neck pickup connection at the switch. I'm further assuming that the added second pickup (optionally on/off -- push-pull) would be connected directly to the pot terminals.
2. Optionally engage a small cap that would affect treble tone. The pickup output, again, would be constant, and the cap engaged at will via push-pull pot to affect the pickup's tone. I think the cap would be connected at two terminals of the pot (a double-pole variety?).
About the only application that is usually addressed on these other web sites is for splitting the two coils of a humbucker pickup. I can't find a "how to wire a DPDT (or other specific) pot" video or description; if I could find representative wiring examples with their respective applications for all four of these types of pot, I think I would be able to figure this out. But, I can't. The SPST seems to simply be an absolute on-off switch and would not allow any constant signal pass-through. I don't know about the others. Any suggestion welcome. Thanks.
PS - I removed a similarly-assembled harness that did not seem to work. Both effects were wired to the Volume pots, one effect per pot.
Here are the two modifications to a wiring harness I'd like to make:
1. Three-pickup guitar and all three pickups simply have two wires: one "hot" lead and a ground. Two of the pickups are connected to the same switch connection (neck and middle). Which type of pot would I use to engage the middle pickup optionally while maintaining constant connection of the neck pickup (regardless of whether the middle pickup being used or not)? I am assuming I can leave the constantly active neck pickup connection at the switch. I'm further assuming that the added second pickup (optionally on/off -- push-pull) would be connected directly to the pot terminals.
2. Optionally engage a small cap that would affect treble tone. The pickup output, again, would be constant, and the cap engaged at will via push-pull pot to affect the pickup's tone. I think the cap would be connected at two terminals of the pot (a double-pole variety?).
About the only application that is usually addressed on these other web sites is for splitting the two coils of a humbucker pickup. I can't find a "how to wire a DPDT (or other specific) pot" video or description; if I could find representative wiring examples with their respective applications for all four of these types of pot, I think I would be able to figure this out. But, I can't. The SPST seems to simply be an absolute on-off switch and would not allow any constant signal pass-through. I don't know about the others. Any suggestion welcome. Thanks.
PS - I removed a similarly-assembled harness that did not seem to work. Both effects were wired to the Volume pots, one effect per pot.