The switch controls the relay coil. The coil draws very low amperage.
So, the fuse can be small; larger than what the coil draws, and smaller than what the switch and switch wires can safely carry.
The fuse for the light circuit can be much larger; larger than what the lights will draw, and smaller than what the light wires can safely carry.
Do you see the relationships among load, wires, and fuse?
2008 Unlimited Rubicon Automatic
Last edited by ronjenx; 04-20-2018 at 06:55 PM.