Just got done a couple days ago... new LED dome light conversion.
Here's a shot of the rear ceiling light, I used a pair of LED patch lights. They're wired together with solder & heat shrink.
Lit up at night. There's a patch light in each front dome/map light, and the ceiling light. The passenger lights still have the bulbs. (And look like birthday candles now) The bulbs gives a filament load to the computer. If everything's LED, the lights don't work right.
Oh yeah, I also got a set of license plate lights. The plate has daylight on it now.