You should think over the purpuse of the roof light.
Powerfull front light is better have on bumper and have not LED, cause it bull****.
I have two long range 50W HID lamps first on my bumper and they worked awesome.
Then I changed it to the light LED bar 250W. Now I suffer from my chioce. The power is very strong and you may read a book at a 1000meters far away, but if you sit at the drivers place everething is overlighted and you see about 100meters, no more far(
In winter if it is snow every where it became a serious problem.
LED dont have sharp edge and light goes everywhere to the bottom and to the top, and for front there is very small light power left.
My two 50W HID were much more efficient then 250W LED bar.
Roof point.
There are two vatiants of roof light.
Work light and drive light.
Work light is for camping, working near the rig and so on. Where you look to the car side from the out.
If the lamps dont have sharp top edge and is not directed to the bottom(ground) it will blind you, and you will course you lamps less then in an hour.
Drive light may have no top sharp edge and it helps you to orient in forest and mountains roads, where you need to see high obstacles and object.
Make sure that your Light bar is pretty far away from front roof edge, otherwise it will blind you reflecting from bonnet. Bonnet wil shine like a christmas tree and your eyes will suffer. And it is a real problem, trust me.
To make a panorama view you should have lamps that directed to the sides and couple lamps in the rear. It is very helpful especially in forest and in offroad where you need to work with your steering wiil hard. You simply look to the side and you see everthing before rig is turn to that side. Is very very good option.
I have 8 lamps. Hella HID flood beam. front 2 looks towards. front 2 looks 45 deg to the sides. front 2 looks 90 deg to the sides. rear 2 looks 30 deg to the sides. So I have completely panorama view from my car.
But as I said before there is not a camp work light.It is difficult to look to the car side at all. For exumple your (here I dont know how to call that man in english, we call it navagator, man who work with you winch rope, direct you in offroad, dig snow and mud, hook ropes to another rigs) "man" will not b glad if you roof light will work. But witout them he see nothing.
About switshing. You know that you may blind another cars on road, on off road.
All additional power light have a different switches front bumper, front roof, rear. And one swiths that may turn it off all at ones.
So if you drive with all your lights and meet oposite car, i can simply push one button to shut all lights down.
BTW I use the Overdrive button for it on selector, and overdrive function transfer to another button because I never use it.
