I want to put a set of P-Rails in my PRS SE Custom, but I don't want to rout a slot for a 4 way blade switch. I'd rather put a 4 way rotary in, if I can find one, but I can't find a wiring diagram, and my guitar tech is less than keen to do it without! I suppose I could use Triple Shots, but they're considerably more expensive than a rotary switch would be, and it looks like they'd be fiddly in use. I want to keep the 3 position switch for Bridge/Both/Neck switching, but also have the Rails/P90/Series HB/Parallel HB options available for all those combinations.