Hi people I'm brand new to this board . This is the guitar in question Im fiercely Scottish and also an ancient old fart who play's blues and rock mostly and Ive decided to rewire my beast . My question is The circuit says North start , North finish . I presume this means the Start wire is the Plus wire . I'm wiring up two humbuckers to a two vol one tone with series/split/parallel switch for each pickup and a master series/parallel and and a phase for the neck and bridge . The Guitar is a left handed solid body LP style which I made meself .The pickups are Warmans , 12 gauge at the neck and a Destroyer at the Bridge . . OK So thats the question . Is the Start wire the plus wire ?
The answer to that question is the same as the answer to: "What should I wear to my urologist appointment for my bladder control problem?" Depends.
In the case of a pickup, it depends on which direction the coil is wound and which magnetic polarity. Most HB pickups have both coils wound clockwise. The screw coil has magnetic polarity of 'south up'; the slug coil is 'North up". (Up = closest to strings)
The 'start' wire of the slug (north) coil of a HB is most likely the 'plus wire' and the 'finish' wire of the screw (south) coil of a HB is most likely the 'plus wire'.
Neither of your pickups have the usual slug and screw coils. However, Warman does have some information on the wiring of their pickups.