re: BR pickup trucks with blinding bulbs and light bars

I don't get the ones on the cab. They fricking screw into the top of the cab. They actually poke holes in the roof of their trucks.

Now the small ones on the rear bumper I can see for trailers,etc. Even the small one up front on the bull bar... But the fricking cab lights are just nuts...

Off topic, are grounding straps on trucks the new truck nutz?