I did a couple months ago. It is in the shop right now so I can't snap any pics. I just used a basic disconnect switch from camping world, went to Lowes and got 2' of wire the same size and color. I put mine on the ground side of the battery but that was just because when they installed my battery they did a poor job of getting the battery case closed up so I needed the extra wire length on the ground side to get that fixed. The metal wall behind the battery is the same wall in the front compartment so make sure nothing is behind it and mount it with self tapping screws. The whole thing took me 15 minutes total.
2000 F250 CC 4x4 7.3L diesel
15 Salem Hemisphere Lite356QB