so I decided to convert my cross bar into a light bar. I just wanted something simple. Unfortunately 10 months out of the year my truck is a mall crawler/ grocery getter. But I wanted something for the bad weather, and hunting and what not.
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I ran the factory switch to a relay under the hood.
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Nice quick detach system you have there! Was not a big fan of the square light set up but it looks way better in person. And the inside is all factory switches which makes it look neat and professional. Good job brother!

 

Me gusta. Very nice, sir.

 

thanks guys. I got the hook up on a nice factory light switch. does anyone know if it does any good to switch 55w h3 halogen bulbs with Led bulbs. the best I can tell from online reviews is that you get a better color but the same or worse visibility. has to do with the non directionality of the led.

 

hope you didnt put all 4 on one relay. if it was me i would add 1 relay and 86 the square lights

 

yeah I decided I should have used two relays. if the relay gives any trouble i'll add a second one. the square lights match the profile of the trucks factory headlights, and lower fog lights.

 

You usually can't just throw LED bulbs in halogen ballasts usually...I think you can do an HID conversion though.

 

One relay is more than sufficient for four 55w bulbs. 55w x 4= 220w. 220w/12v = 18.33A. Most relays have a 30A rating.

Why consider two relays?

 

well I had considered running them on two switches, but I couldn't really think of a situation where I didn't want max light output, so I ran them all together, then I wondered if one relay was enough... time will tell, but I agree one should be fine

 

Setup looks good! The extra relay is not needed to handle the load of the lights for switching, but it would give you a couple nice advantages if you have a problem with the lights.

1) If one relay goes bad, you would have some light through the other relay.

2) If you loose just the lights on one relay, you would know the problem was from that particular relay out to the lights, and not the wiring back to the switch that controls both relays.

Just saying.