So I got a light bar for my roof of my truck it all works and stuff. Ik how to wire it. I just need opinions on were I should put the switch in my truck. I have ideas but and ideas will help

 

I have my Light bar wired up to a relay under the hood and a switch on the right hand side of the dash. I used a Missile switch.
the relay i used was i think for an ac? im not sure lol it took me a good day to rummage through the boxes to find the right style of relay i wanted.
as for the wires I ran the behind the interior trim.

 

So I've heard I need to put in a fuse and relay. I understand the fuse but why a relay?

 

In the collectors case, he's running 2 240w lightbars. That's allot of juice for a single switch to operate. A relay is a remote battery cable per say and takes the load off of the switch. That's the smart way to run a high draw load.

 

That's understandable. I didn't look a it that way. I'm running 4 kcs off of this and should I put a relay in?

 

4 55w bulbs = 220w. Can't hurt. I would.

 

I ran a relay for one of two reasons, 1. less wires to run, i just need one going out to relay under the hood. 2. as unit505 said its much safer and you have less of a chance at burning up something important.
you Really should run a relay system even with just 2 55 watt halogens.

 

Thanks for all ur help I will run it. I wasn't sure wat the advantage was. Because I don't have to much wires to mess wit. I was goin to ground it through my frame and run my hot through my switch to my battery. So Im not sure were to put it