Doworktruck

http://www.sylvania.com/en-us/applic...s/lrgmain.aspx

This guide has never steered me wrong.

Warspite

+1. I usually start there. Osram Sylvania is always right regardless of how obscure the bulb is. Ford, Jaguar, Infiniti, Cadillac, etc. spot on for each. I don't even trust the compatibility guide on eBay listings without checking Sylvania site.

Warspite

BTW, check out some previous posts by BrowningScrew and 2000MTZ. They had some great examples as well, and their posts include the sources. Personally, other than turn signal bulbs, I replaced all bulbs with LEDs, and I like the updated look, all cool white.