yeah i did think of that, but as i have a 3/4 roof rack they will sit back a bit and hopefully dull that a bit
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I put a pair of bull lights (bought for $20 at a garage sale) on the roof of my old Rangie, fantastic for outback trips. I ran the wiring up through the snorkel- in fact this was the main thing that prompted me to make a snorkel. When the rack is removed, the holes in the snorkel (one under the bonnet and one near the roof) are sealed with blind grommets.
My lights were placed close to the front of the rack, so the bonnet was fully lit up with them on, not that much of a problem as the bull-lights put out so much light (the sun also illuminates my bonnet during daytime, after all), but further back would be better.
I wired the rooftop lights so they could only come on with the lower driving lights, but could be switched off independently. There is such a thing as too much light, e.g. when approaching big signs or other reflective objects. Don't have any detailed pics of the installation, but this one shows them in place.
To avoid glare on the bonnet - mount them back far enough and as low as you can so that the roofline casts a "shadow" over the bonnet.
Glare on the bonnet is not such a great issue on dark coloured vehicles - but a real pain in the ares on a white one.
My light (it's a 40" LED light bar) is mounted underneath my roofrack between the front set of legs. Works well for me and I don't get any glare on the bonnet at all. It's protected by the roofrack - I'd have to virtually destroy the roofrack for anything to hit the light bar.
As far as getting the wire up there - I've gone the opposite way to most, as I don't have a snorkel and not planning on getting one. My wiring runs from under the bonnet to the back of the vehicle along / above a chassis rail, and then comes up the left side of the tailgate and enters the roof tracks under the rear bracket. From there, it runs up the inside of the roofrack inside the frame to a plug located just behind the lightbar. Completely invisible except for in a couple of spots - and you'd have to know what you were looking for to find it.