Hellzero

What about this more modern technique dating back to 1965...

You have to solder that jumper, otherwise it won't work the way it is supposed to do. This link is made directly on the circuit board you removed. 😉

Check this @ped : https://www.luggagefactory.com/blogs/news/how-to-set-up-luggage-locks

@bagsieblue Does it work now ? That said the difference between the single coil and parallel mode can sometimes be very hard to hear, but come close to a screen or a transformer and you'll instantly know which one is engaged. 😉

Or push the slider.

IIRC you have to dial in a new secret code and pull that slider to "memorise" it. By default it's not set at all.

And Z for ZZ Top.

And so on...

That said, if you're wealthy you can buy the original assembly part by Warwick and don't forget to check the shipping fee which is as delirious... https://shop.warwick.de/en/parts-for-instruments/electronics-parts/switches/20274/mec-mini-toggle-switches-assembly-for-coil-splitting-on-humbucking-pickups

This is upside down and I still don't see any difference...

Tell me where is the difference upside down, please ?

Remember that you have to solder that jumper between pin 2 and 3 otherwise it can explain your problem as there will be not grounding of one of the two coils creating the "single coil" mode.

If your switch is a DPDT On-On-On, there is no up or down position as it's internally wired the same way, so except for the notch, there's no upside down position. Did you ground the pin 5 and the green (or white) wire ?

The wiring is different on the neck and bridge pickup to allow the 2 single coil positions to act act as a humbucker when blended, so no noise (less in fact) and use of the outer coil of each pickup.

Ok, it's the correct switch. Don't worry about the notch on the switch as you can turn it to the desired position afterwards. There are 6 pins on your switch when you look at it from the rear. Let's number them beginning on the top left and going to the bottom right, so you have 1 on the top left, 2 on the top right, 3 on the middle left, 4 on the middle right, 5 on the bottom left and 6 on the bottom right. 1. Make a strap between 2 and 3 on both switches. 2. Starting with the neck pickup. 3. White on 2. 4. Red on 4. 5. Black on 6 = Output. 6. Green on Ground. 7. Ground on 5 too. 8. Now the bridge pickup. 9. Green on 2. 10. Black on 4. 11. Red on 6 = Output. 12. White on Ground. 13. Ground on 5 too. This now should work.

What type of 3 positions switch did you use ? On-Off-On or On-On-On ?

That Makita box standing freely on the ceiling is simply amazing. Are you defying Newton's laws ? 🤣

Told you that @mhoss32 knew what he was doing. 😉

@lowlandtrees you can ask @mhoss32 to help you as he builds his own filter based preamps (and pickups) and fully understand them.

With filter based preamps, you have more to think like what's missing in my sound or what's prominent in my sound and start from that to tailor your sound, but it's quite difficult to use if you can't figure yourself how it's working. If you already have troubles dialing in a decent sound with a semi-parametric mids control (frequency + cut/boost), forget the filter based preamp and swap it for a conventional preamp. I would suggest the John East BTB-02 preamp (2 or 3 bands without any semi-parametric mids) which is the easiest to use and excellent sounding. Just ask John who is the kindest man on earth to help you solve this "issue". That said, I sincerely think that conventional filter based preamps are a total heresy as 80% of the people will NEVER get a decent sound out of it, because it's much harder to understand than a conventional 2, 3 or 4 bands preamp. People want to pick up their bass and start playing and when hearing their sound, they want to be able to immediately correct it without figuring for 10 minutes which knob is doing what and thinking about sweep, curve, Q factor, frequency response, inductance, capacitance, sensitivity, impedance, matching impedance, etc of their pickup(s) and preamp. If you're a tech nerd, these filter based preamps are definitely for you, if you're not forget them.

Buy the studio trilogy then : Hejira. Don Juan's Reckless Daughter. Mingus. The live, but less interesting because of the overplaying, is called : Shadows and Light.

A song about the main side effect of anaesthesia...

To continue @Jus Lukin comment, Jaco's solo here is utter bullsh*t and absolutely useless. I watched the whole concert today and must confess that there's indeed some kind of fighting between Joni Mitchell and the band. The trilogy studio albums with Jaco Pastorius on (non show off) bass are more interesting finally. That said, I hardly can't stand folk or americana...