I am guessing that its like my Rams. I wired in LEDs to the stock bulbs, I believe there are twist locks, they are grey.
Here is what the ones for the speedo look like, the AC controls is smaller and longer
I have the same problem. Went to local Dodge dealer and he wanted to sell me the whole control unit, I said NO Thank you. Got one from the junk yard, it had one good bulb (only 2 more to go). Sent a letter to Chrysler parts at the address in the owners manual and they say the part is no longer avail. Looking at Radio shack for replacement parts now.
The twist locks are hard or impossible to find. I find it hard to believe that we are the only two operators to have this problem.
I'm going to keep checking this thread and update what I do as I go.
If you guys are looking for a hard to find bulb or LED, try MCM electronics. They have just about every type known to man. I order the old fashioned way, from a catalouge but they have a website. It's www.MCMELECTRONICS.com < click here and check it out. AL