Guys,
I am struggling here. I need to replace the bulbs behind the instrument cluster on my '99 F150. I checked Sylvania's application guide on their website and checked on the "LED conversion" post here. Both sources referenced 161's, 194's, and 37's. I was sure what was where so I bought them all. None of them fit.

The bulbs in my cluster are a larger than the 37's and smaller than the 161 and 194.

I really can't see a difference in 194 and 161......guess it's different wattage.

Advance Auto website shows 161, 194, 912. So maybe the 912?

Thanks in advance!