Please help - need to identify/replace a bulb or bulb assembly (A body rallye dash AC/heater control)

Yep. A sticky in the electrical forum. Light bulb chart That will get you the original bulb number and you can go from there.
Thank you sir. I feel a little stupid because about 30 seconds after I posted this I was looking at the pic and thought, "I bet that cover comes off...". But I already admitted I overthink these things lol.