I did it on my old camper. It's just a matter of matching the base style of the bulb. There are direct automotive led replacement bulbs everywhere from Amazon to many auto stores. The original bulb may have a number on the base like 1095, 1156, etc, that you can use to find an LED replacement.
As far as wattage, LED's generally use far less wattage than the incandescent bulbs, so overloading isn't a problem.
2017 Rockwood 2109S
Me Her And a furry little dog
US Navy Veteran