The Single Climate controls use a 2 bulb unit wired with a harness that attaches to the board on the inside of the controls Picture follows.

There is a third bulb separate from this harness for the Rear defroster button.
As for the Dual Climate Control system, they deal with very small twist socket bulbs, there are 4 total + the same rear defroster button bulb which I don't have shown.

I apologize for the small pictures for the 2nd one.
I don't know the size of these bulbs but I do know they are either dealer item or junkyard find. I have searched through the bulb books where I work we have similar ones but not exact.
Autozone does not carry them as well I have not checked others cause a junkyard is the easiest place to find them.
Feel free to add some more info I know haven't covered a lot maybe the actual bulb size...

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