Hi All.
Are you sure that its your Head-Lights that are bad. I had the same thought one time, as I couldn't see very far down the road at night.
I did some checking. And the only thing wrong with our Motorhomes Head-Lights, was that the Ground Wires were so corroided, they were hardly making any contack at all. Took the "Ground Wires" off, and cleaned them really good. Then I sanded the Frame down to bare Metal, and now I have great working lights. Working so well, I don't see any reason to change them to any other kind of "Light-Bulbs"
Good Luck. Happy Travels. Dan & Jill & our two small "YORKIE KIDS", who love to Travel as much as we do