Can Somone please help me figure out what else I need for my goal? I want a total of 6 lights mounted on my roof rack. 4 facing forward and 2 facing reverse operated on 2 seperate switches. What kind or relay, how many relays, and what is the best size wire for running the lights. Lights are 100 watts each. Also how has everyone with roof mounted lights ran the wires into the interior?

Currently I have:
2x of these switches
http://www.amazon.com/gp/product/B00...00_i00_details

6x of these light
Amazon.com: Navigator NV-802C Utility Off-Road Light: Automotive


Thanks everyone.

 

If you have the roof rack ontop just drill holes into that, run a wire for the ground (I used the star bolt holding the roof rack down for the ground) then run a power wire to the switch. (i went in through the back door tucking beneath the rubber seal to ny switch in the center console) then run a wire from the switch to either the fuse box or the battery.

As for wire I would say 14 or 12 for the four and you can probably get away with 16 for the two rear facing ones.

 

This may help you.
https://blazerforum.com/forum/articl...05/#post485540

With that many 100w lights personally I'd have them hooked up to 30 or 40amp relays in pairs with at least 10g wires (2 lights to one relay). The relays (on the activation circuit) can be 14g or even 16g. The relay activation wires can be joined to one line for 2 relays - IE: your 4 forward facing lights. Because the activation circuit is just a line to ground the relay to activate the high current side of it. The high current, as I mentioned should be 10g to each light IMO.

After thought - think of it as a foreman (14g activation line) the foreman tells the worker (relay) to do the hard work, in order for the relay to do the work they need a clean, free flowing route. (10g)
The foreman does next to nothing yet the worker has to do the heavy lifting & needs the 10g in order to do it.

My end of story would be: 3 relays
- 2 for each pair of forward lights & having the activation circuit ground lines joined & routed into the cab on 1 wire to a switch
- 1 for rear facing lights with the wire routed into the cab to a seperate switch.

Hope that helps & doesn't confuse

 

1 relay for 2 lights, 10 gauge wire at least for power, dang near any size can be used for the switch wire.

 

So 3 relays total? per 2 lights and then 2 relays run to the same switch?