Tvr what are you going to do with the wire?
Zip tie it to the roof rack and go through the roof under the roof rack? So if you take out the light there won't be a hole ?
Like under where the roof rack is bolted to the roof
would it be worth getting another light bar as Mk2 suggested but have one as a focused or spot beam and one as more of a flood beam, that way you could see everything around you and forever into the distance? just a thought.
Out of curiosity what bulbs have you got in your headlights? if you get some of the plus 100% ones you may get some better light from the headlights and then you can move the front light bar to the back