1968 LeMans has a courtesy / map light mounted under the dash above the radio. For the life of me I can’t find the lamp bulb that fits. No reference I can find in the service manual, web search isn’t helping, and no luck at O’Reilly’s. I found the entire assembly online at The Parts Place but not just the bulb (which looks different in their illustration anyway). A picture of the bulb I removed is attached. The number on it is faded to illegibility but if I was to guess it looks like O (or maybe D) 92 but those don’t bring up anything relevant in a web search. Can anyone identify it? Thanks!