I had pancake lights throughout my MH. The plastic on several were yellowed on the outside (over time). Some lights had poorly working switches on the fixture. I did not want to deal with LED bulbs or the square LED panels that one glues/sticks to the reflector inside the pancake light.
My solution was to replace all of the pancake lights with Thin-Lite LED pancake lights that I bought from Amazon:
Double pancake LED light ,
Single pancake LED lightThe incandescent double pancake lights drew about 36W (or about 3 amps). The LED double pancake lights draw about 7W (or about .6 amps).