2006 LTV map light bulb 1816 needed

[englewoodfl]

Over the passenger's head is a small "map" light on a flex arm. The bulb is an 1816 but neither a Sylvania or NAPA bulb will fit because they are too big. The bulb I removed has a diameter of .34" while the other bulbs are .395". Where can I buy the correct "version" of the bulb?
FYI - the spec for the bulb is a width of 10mm (GE specs at 11mm) which is what the replacements are but the bulb I removed is ~8.5mm.

If I can't buy a bulb what's a good replacement for the entire assembly?

 

[Cheyenne]

That looks like an old fashioned instrument panel bulb or possibly side light bulb. It was certainly popular in the UK in the past.

Keith.

 

[englewoodfl]

The van is LTV so finished in Canada. I've noticed other parts that produced in Canada - but why would you make or install with non-standard bulbs? Maybe I'll just get an adjustable LED reading light and swap it. I used a stick and popped the trim base off - glad it's screwed in from the reverse.

 

[Cheyenne]

Here are some alternative numbers... https://www.halfords.com/motoring/b...urers-standard-halfords-twin-pack-717011.html

Keith.

 

[englewoodfl]

Well - that was interesting. After research found that a Wagner 17131 apparently matched the bulb that was in the map light holder. On Amazon +$100.00 for Q=1 but only $2.50 for Q=1 at the blue car parts store. After filing a small amount of excess solder off fit right in and at 4 watts is the same as the "1816" bulb. A little dim but the CEO is happy. Done with yet another item on the long to do list.