Active with a switch too Passive set up

Looking for a wiring diagram for Active/Passive switch.

Look at @walterw answer in post #6. Also, I’m not sure about the SUB’s but some of the Music Man pickups are relatively low output and need to be paired with a preamp to get a good level.

 

Totally not necessary;

the only way a normal alkaline 9V battery in a bass will “die in the middle of the show” is if you’ve played the three previous shows without noticing your grungy, mushy tone!

you get plenty of time to realize the battery needs to be changed, the sound starts to go bad long before it quits.

it’s high-drain stuff like wireless units where it sounds perfect one minute and then goes dead the next. Stuff like that needs a new battery every show, and is where rechargeable batteries make sense.

 

Like @walterw said.
I had a Ferrington acoustic/electric from my past that was in my mother's basement in the case since 1997. I took it home with me over Thanksgiving. I admit I was very nervous about what I would find. When I got home I plugged it it for an adventure and it worked. I replaced the battery and it obviously worked better. I've been playing gigs since the '80's and more than half my basses have been active. I can honestly tell you I've never had a battery fail in a bass. Your experience may differ. Just change bass batteries a couple times a year. So if you swap it out every 6 months you'll be fine. If you're playing and it sounds a little lower or a little farty replace it. Put one in your case if it gives you peace.
Lucky you have quick open battery boxes so a swap takes about 10 seconds.

 

+1 to @walterw and @Killing Floor. You'll definitely notice when it's time to change the battery. In 20 years of playing bass, I've also never had a battery die completely. My very first bass was an active bass and I noticed the mushy, dirty tone that Walter mentioned. Figured out it was the battery dying, and it's never happened again. Even in my main players, sometimes I only change the battery once or twice a year, and it's more just out of habit than because they actually need new batteries.

Just make sure to always unplug your cable when you're not playing, and the battery will last for a good long time.

5sg.