PICKUPS SWITCH:
With both p'ups on, the rear p'up's pot output is connected to the output jack but the rear p'up has no ground connection; But the front p'up's pot output is routed to the rear p'up's ground lead which hooks up both pickups circuits in a series loop to the output jack.
With the front p'up selected On, the switch lifts ground to the rear pickup circuit and connects the front p'up to the output jack.
With the rear p'up selected On, it's pot output is already connected to the output jack, and the switch provides ground for it's p'up and also grounds out / kills the front p'up's pot output. |