I posted this in a DIY thread on the Gibson side but since it's a Epi, I thought I'd post it here too:
So I finally got around to my Epi Black Beauty upgrade. I ditched all the original stuff. pups, pots, bridge, tail piece. Replaced with Seymour Duncan Seth Lover pickups, Emerson pots, Emerson PIO cap, Faber ABR tone lock bridge (awesome) and Bigsby. I actually already had the Bigsby on it but it was mounted on a vibramate. I got rid of that and mounted it right on the top. Finally, and this is the coolest thing, I replaced the pickup selector with a "Free-way" switch (https://www.freewayswitch.com/). It is a six position switch that looks like a stock 3 way.
It is wired like this: