Looks like the Jaguar is coming back into fashion, and most people immediately try to mod it for series and some phasing.
Any guitar with four stock switches screams 'mod me'
Using just the Lead circuit plate switches, it leaves the Rhythm circuit intact, or open for more mod options
The first one uses the same original on-off switches and replaces the bass cut for series/parallel. This is in case you don't feel like replacing the switches and find the bass cut useless.
The other two use two DPDT switches and keeps the bass cut. The bass cut can be replaced with a phase/coil tap/local parallel if you want.
The switching logic for using just 2 SPDT switches can be found on this forum (sorry, can't find it at the moment)
or at
www.1728.com/guitar5.htm at bottom
Since it only uses one side of a DPDT switch, we have left over poles for more wiring options.
I've used the same Jag wire colors and the red wires are the new added wires. Since the drawing is sideways, left is down towards the edge and right is up toward the pups. Set it up so pushing down the needed switches puts you in series. If both were up, hitting one accidentally might shut off the signal, not good.
Either or both switches in the up position controls individual pups or parallel of the two.
You'll have to run a separate ground for the claw of the pup that you're going series into. So neck into bridge, you reground the bridge's claw.
If the pup's negative/ground is not shown, it's going to the normal ground.
This one uses the same SPST switches and the basscut becomes the series/parallel. There is two dead spots when the two pup switches are opposite to the s/p switch, which makes sense.
The N or B works regardless, so you could set it for 'series' and turn on one pup at it's switch. The other pup is shorted or left hanging.
This one replaces the SPST for DPDT switches and keeps the stock basscut and provides series of neck into bridge to the Lead pots.
Two new switches again, giving bridge into neck, but you can chose between the Lead (& basscut) or Rhythm output depending on where the Rhythm switch is. Altho the Neck has to be in the 'up position' for the regular Rhythm to work.