Coming to you guys/galls for the best advice I know to be found on any Jeep forum.

Have the wiring kit pictured rigged right up to the battery that's powering a 20" light bar currently. The second set of (+) and (-) wires that are built into this setup are ziptied out of the way for now.

I want to add two led cubes to the A pillars and was thinking of splicing in a 3rd set of pos and neg wires to the currently unused "line" so that I can avoid buying another relay setup and drilling another hole in the dash. I have no idea how to tell if that would be potentially pulling too many watts from that relay setup and if it would be safe to do. Would prefer to not catch my rig on fire. I appreciate your time and advice in advance!

 

Forgot to add picture...such a noob still.

 

You will need to know the wattage of the total led lights you want to use. As an example, for each small led in one of the lights = 3 watts. A 20 inch led light should be 126 watts, a cube with 6 led's would be 18 watts each, so you take total wattage divided by 12 volts = amps. 126+18+18= 162/12= 13.5 amps. Use a 15 amp fuse. A typical 12 volt relay is good for up to 30 amps, so you are fine.

 

Found the wattage of all three lights, was the same as your example you used. Says my relay has a 40A power relay and 30A blade fuse.

Thanks again for all your help. Time to get to soldering and mounting tonight!