Light Bar Wiring

[Cardfan]

Mounted my light bar on the ft bumper which came with 14awg going into a relay, Also came with short length fused 14awg coming out for power, and thinner wire for the switch. Currently just have the power hooked to the battery which works, but I have my Centech harness apart trying to cleanup the wiring and this looks messy at the battery post.
Should I repurpose one of the unused wires for the bar power (white Coil, yellow horn, yellow alt, white term, tach sender) not even sure if any of those have power just guessing one is bound too. Ha. Or do I take the relay into the firewall and try to find power by the panel somewhere. Or possibly the just the starter solenoid instead of battery and call it a day?

 

[Steve83]

It's hard to follow all that without pics. Typically, the starter relay is the best place to tap power for exterior accessories like winches & lights. Only pull the relay's control wire through the firewall for a dash switch if necessary. These are generic diagrams:

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[AZ73]

I ran my switch through an aux wire on my painless harness and I have a Bussman fuse block with a 100 amp fuse for my 3G alt on the apron that I connected the light bar power to. My battery only has the main + and - wire on it.