I'll give it a check, thanks for the input. I also covered the exposed parts with electrical tape after I took the picture.
Those bolts looks similar in size to what I used to mount my Blue Sea fuse box to the top of the OEM fuse box. I'd recommend you go back in and make sure that the bolt heads inside the fuse box cover are not putting pressure on the tops of any relays/fuses.
I colored the tops of the relays with a sharpie then wiggled the box cover around a bit and saw that they had lightly scratched the sharpie off the tops of some relays. So I thinned down the bolt heads a bit to give it a little more room in there.
I'll be interested to see how you wire the switch. I did find a great place for switches, @ $12 each, here on the Forum:I just bought the same model winch from Metal Tech! Thanks for the great idea on installation. I'm going to add the cut off switch as well.