Ehdwuld, I use a 2-conductor connector for the output jack, and simple spade connectors for the bridge ground, and yes, I configure them so that they can only plug one way.
Jeremy, I originally bought this guitar loaded with Hot Rails in the middle and bridge positions, and a Little '59 at the neck, but I swapped the neck and middle so I have Hot Rails in the neck, a bit more to my liking. The new one I got a *little* carried away with. The neck is an Alnico II Pro with a Triple Shot ring, middle is a Classic Stack Plus, bridge is a '59/Custom Hybrid, also with a Triple Shot ring. The 2 humbuckers/Triple Shots go to a push/pull switch at the volume control so I can switch between series or parallel between the 2 pups, that then feeds the 3-way blade, wired normally N/N+B/B. The output of the 3-way joins the middle pickup at a 4PDT on-on-on mini toggle, that allows me to add the Stack pup to whatever configuration is coming from the 3-way in either series or parallel, or with the middle disabled, and just passes through to the tone circuit, which is wired up as a G&L PTB circuits, with both high-cut and low-cut capabilities...*whew*... Shout out to Artie for helping me with the 4PDT wiring configuration!