Our head lights on the Newmar are really dim, the wiring has been replaced with new over sized Aircraft wiring. Now it's time to up grade the bulbs, but ?? with what?
I replaced my OEM headlight bulbs with Silverstar Ultra bulbs. It helped a bit but I also have the far too common low voltage issue that many motorhomes have. I plan to fix that with some new wiring and relays. Due to small diameter wiring voltage at my headlights is 11.8. Check your voltage. If it is low, until you fix that, nothing much else is going to help.