Rooftop lightbar wire awg

What guage wire are u guys stuffing in the window channel? 12?
Id like to send a couple of pairs up there for future use. i was thinking 18 but wanted to know what other members have used.

 

Nm just saw other thread w chart

 

all depends on the light bar.

 

12 GA should cover it. That what I have on mine. I modified a primelux harness- cut it down to exact length and added heat-shrink so that it tucks in nicely to the channel.

 

Depends on watts on your ledbar and distance from the battery. Think about voltage drop. Link for the table: http://www.offroaders.com/technical/12-volt-wiring-tech-gauge-to-amps/
I'm using 10 AWG from fuse/relay to ledbar and 4 AWG welding cable before fuse because of few devices on this cable. But I'm running cables under the body to camper shell and from camper shell to the roof between bed and cabin. The distance in my case about 25ft+15ft.