It really depends on what bulbs you're using. In our toyhauler we have 3 different kinds of bulbs. I've replaced all but a couple that are rarely used, with LED's. Love the light, and love the lack of heat output.
I got most of ours from Amazon, but there are lots of other suppliers out there. You do need to make sure you compare the output to make sure the LED bulbs are as bright, or brighter, than what you're replacing.
G4 pins/bulbs1076 Base BulbsAll the rest of the overhead bulbs.Hope this helps.