It’s time to change some wiring. I plan on going to a different relay to allow me to add some more circuits. General tiding up of wires. I plan on running a 30 amp relay witch should handle all my add on’s. I will put a 30 amp breaker to supply it. My question is what gauge wire is needed for hand warmers and what amp fuse? What gauge wire is needed for Rigid lights and what amp fuse?