X98boardwell - what you’re holding is what belongs in the right side of the slider controller (fan/up arrow symbol) slot, at least that’s how my ‘77 is set up, this one lamp socket keeps popping out.
My new photo below isn’t that good. Note the four wires: two Brown - one Black - one Black/Blue stripe. The terminal (yours) is bent out to 90° whereas mine is flattened.
There’s only so much slack in the loom so it’s limited as to where these sockets can go.
So to be clear, your ashtray light in not working - but what about both sides of the heat control sliders?
It might be difficult to see if slider bulbs are lit so a darkened garage is best. I do know these bayonet style 1.2w bulbs have tiny wires on the outsides and if they’re bent or askew going into socket, they won’t work until proper contact is made inside the socket.
It’s tough, maybe impossible to get at these slider bulb sockets with radio in the way. But you can feel around to check the ashtray light socket is there and pop that out from underneath, which I’ll try to get at to give you anymore reference if needed.
It wasn’t until it put my glove box liner and radio back in did I find that that heat slider bulb socket popped out which I’ll be sure to wrap some tape around it to snug it up this weekend when my radio gets replaced!
