This Jagmaster came in to have some House Of Tone pickups installed and a Fender Rhythm Circuit on a push/pull tone pot. Though not an exact recreation of the circuit I managed to approximate the effect with some resistors and some help from Jon Shuker. Thanks Jon.
The open hum buckers that were on the guitar originally had a route on the scratch plate with large radius corners, unsuitable for the covered pickups that where being installed so installed so I had to route the scratch plate to fit.
I set the guitar up, the nut was low but passable.