Wow 3 Onix's.
That's some baller stuff.
If something is blowing a fuse, then too much current is flowing through the electrical circuit.
This could be caused by a hot wire, grounding prematurely (a short).
I would check all wiring to the battery.
Look for any frayed wires, and/or loose connections.
Also, all connections to and from the switch.
Also is your 360 software up to date?
Wouldn't hurt to charge up your battery and get it load tested.
Intermittent electrical problems could point to a bad/failing battery.