Recently, in my quest to eliminate incandescent light bulbs on my tractor and to improve the light's function, I found a very inexpensive kit designed to upgrade incandescent interior lights in any vehicle. I just happened to put this kit to use in my 1025R with the Mauser Cab. When I have used the dome light while plowing snow, it has worked alright, but why not make it much brighter and remove the heat source from inside the light fixture in the roof of the cab? While the heat from the bulbs is only likely to impact the dome light fixture itself, why not remove the possibility of melting the light lens or otherwise causing damage over time, not to mention make the light much, much brighter?
Amazon.com: EverBrightt 6-Pack Cool White COB 6-SMD Led Panel Dome Light Auto Car Reading Map Light Bulb DC 12V With T10 / BA9S / Festoon Adapters: Automotive
The entire kit with the components to update several interior light fixtures costs $8.59.
Here is what the kit looks like when it arrives.
Here are the contents of the bag on the counter, so you can see what's in the kit.