I was asked how the Musicman Big Al is switched.
You can select every PU by pusching the button.
But when all PUs are "off", PU 1 and 2 are wired in series (instead of all being off).
I first thought that you need special switches or switches with more connectors than "On/On". But then it was very easy and I soon found out.
Don't know if it is the original solution - but it works ...
Also added a version where PU 1 and 3 are on when all switches are in "off" mode. This is very interesting for JPJ basses. You can play the Js
parallel (switched while P is off) or play them in series when all switches are "off".