I am short-timing in an RV while we are building our house. I have been replacing all the 12V incandescent bulbs inside and exterior to the coach with LED's. In this venture I have done some research and found a number of aftermarket companies offering LED retrofit headlight kits for many applications. The only caveat seems that though the LED's put out terrific for a low energy draw, they nonetheless do make heat that will destroy the LED chip quickly if not removed, and the kits have either heat-syncs or even fans. I like the non fan type heat-synch due to simplicity. The non-fanned type however do make the install a little harder and might even preclude an application depending the space immediately behind the headlight reflector. I would think that if we could retrofit to LED headlights that our glide time on battery would be appreciably extended at night with the headlights on. I believe the LED headlight elements draw less than 1/3 the amperage. Anyone done this or reviewing doing it? Mark