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I went down a rabbit hole when I discovered Obsidian Wire mods.
They involve all the normal parts: capacitors, resistors, push-pull pots, 5 way switches, capacitors, but...
the ingenious thing they have done is create a PCB to mount these things (via ribbon for the 5-way) and put these spring clamps--like you use when breadboarding circuits,--on the PCB, so all you need to do to install new pickups is insert the wires in the spring clamp.
So what was my rabbit hole? I figured I could do this too, and for more models of guitars...
So after many, many hours it occured to me, that unless I bought the components and PCBs in bulk (after designing them), there was no way I could do it and be price competiitive.
No soldering. Reduces time for swapping out pickups!