i have the 2000 navi with AWD, 4hi, and 4lo. i have the transfer case issue so i am pulling the 4x4 relay that will make the Navi 2wd, but i am going to wire in the on/off switch so i can turn on the 4x4 with the on/off switch. i need help wiring the switch, please let me know if i am missing anything:

i found the 4x4 relay, pulled that. now i need to hook up a wire on the positive side in the fuse box and put a 30amp fused link on that wire, then run that to the POS on the switch? then hook up another wire to the other side of the fuse panel and i am unsure what to do with this one?? does it go to the ACC on the switch or ground? thanks