Where can I get this type of Bulb. It is the interior light on the underside of the dashboard on both sides. I would prefer to find an original one.
Does the bulb have a number on it? If it doesn't have a number on it, look in your owner's manual to see what number it specifies for courtesy lamps (or whatever Cadillac calls the under-dash bulbs , then you can look online to see if you can find one, or a good substitution. As a substitution, you could look at a NAPA # 6451-N bulb to see if the dimensions and wattage are the same. Be careful of using a bulb that has more wattage than the OEM bulb, as a higher wattage will give off more heat and be bad for any lens that may cover it (if there is a lens).
Daryl Chesterman
Go to Sylvania website
https://www.sylvania-automotive.com/on/demandware.store/Sites-sylvaniaautomotive-Site/en_US/BulbFinder-Show?carId=4730&oepn=90%7C212-2¬es=Compare+To+Original
Looks like a #212 bulb
This is for a courtesy light bulb. Check the service manual also. Shape looks different but if wattage and size fits who cares its under the lens.
Thank everyone!