with my front runner rack, I run the wire behind the A pillar mount and then the wire goes between the wiper cowl and a-pillar cowl. There's just enough of a gap between the panels to run a wire.
It depends on rack. If you're running an AEV type that mounts through the roof but doesn't have A pillar support, then you'd have to go up through the roof somewhere. However if it's one like the Front Runner rack, MRBP, etc, then you can go through the cowl in the front and up the A pillar.
It's a barricade it seems to be a copy of the body armor or smittybilt , it has a pillar supports so that's the way I will end up going , thanks for the advice