I'm installing a STK-S5N, a STK-S5M, and a TB4 into my Charvel Model 4 (which when I bought it had all of the active electronics removed). I found a wiring diagram on this site for 3 singles and 3 on/ off switches (with 1 volume and 2 tone). How do substitute the bridge single in the diagram for the TB4 humbucker?