Does anyone know the bulb size for the heat/AC panel? Toyota doesn't have a part number. Apparently, you have to buy the whole control unit. I have a 12V led bulb that I plan on soldering in this weekend. I just thought I would ask ya'll before I went to all of that trouble.
I have tried a #74 bulb that Sylvania's website says will work for instrument lights, but it is smaller than that. I wish I had a picture, but by the time I get the dash off, the led bulb is going in.