How do I hook my halo lights up to a switch in my truck?

I have halo projector lights and I'm wanting to hook the Halo/LED portion of the headlights to a switch in my truck so I can use them when I choose. I was just curious on what fuses I should use, etc. They are wired separate from the headlights themselves so I think I can just wire them up to the cab of the... show more I have halo projector lights and I'm wanting to hook the Halo/LED portion of the headlights to a switch in my truck so I can use them when I choose. I was just curious on what fuses I should use, etc. They are wired separate from the headlights themselves so I think I can just wire them up to the cab of the truck, slap on a fuse (which size?!), and hook it to the switch and ground it, etc. Thanks!
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