Courtesy/Interior Light Bulb?

Doing some little odd and ends on my car, replaced some badly corroded door switches planning to get the under dash interior/courtesy light working. Got all the switches and wiring working. I put in a "1004" single filament bulb in to test it and all is working, but the bulb glass is just a little too big to get into the housing. Need a smaller bulb with the same two connector base style.

Figured that would be an easy trip to the auto parts store to get a new bulb, but struck out after going to two places. Anyone know the correct bulb number that I need to look for?

Thanks,

Curt.