Looking for a wiring diagram for Active/Passive switch.

I think this is a typical wiring design:



The socket for the output audio cable should connect/disconnect the battery ground, so it turns off power to the circuit when you disconnect the cable.

If you can fit a 3-pole switch in this design, you might consider having the passive/active switch also switch the battery power to the circuit board. With this design, the active circuits will continue to draw power even in passive mode.

I'm not sure how passive tone controls fit into this design. If they connect to the "output to jack" signal then they will be in circuit in both active and passive mode.

 

Once again ... TB members come through

 

That’s the one that I've used too

 

ehh, that's the "old" TB switching, it's not so good. when bypassed it leaves the preamp input floating, causing noise, maybe even oscillation and popping.

here's the one you want, it's what all modern TB pedals use:



"effect send" goes into preamp input, "effect return" comes from preamp output, "input" is from the pickups and volume controls and "output" goes to the jack.

when in bypass it shorts the preamp's input to ground, silencing it internally while it isn't being used.

you might be misunderstanding how this works: you don't shut off the battery in any case, in passive mode the battery is still draining while the cable is plugged into the instrument.

trying to de-power the battery in passive mode leads to loud ugly power-up noises, that's why it's not done.

 

What is your volume pot value? If it's 250K, you'll need to replace it with a 500K pot to keep the volume consistent when you bypass the preamp.