After doing some Google searches, I've hunted down the common bulb numbers for our car. The main reason for this is to find the correct bulb number for the blinkers to replace them with clear bulbs that light amber. Check out
http://www.stealthauto.com for examples. My email to them went unanswered but I found out anyway.
LIGHT ~ WATT ~ BULB# ~ OTHER#
Front turn signal light ~ 21 ~ T20 ~ 7440Front fog light ~ 55 ~ H11 ~ --Clearance light ~ 5 ~ T10 ~ 194Front side marker light ~ 5 ~ T10 ~ 194Rear back-up ~ 18 ~ T16 ~ 168Rear turn signal ~ 21 ~ WY21W ~ 7440
I'm a bit unsure why the WY21W isn't marked in the manual as T20. My Google searches showed bulbs marked as 7440/WY21W and since 7440 is the same as T20 it doesn't make sense. I guess when I get my stealth bulbs for the front blinkers, I'll try them out in the back. Or before ordering the bulbs, I'll remove a front and rear blinker bulb and see if they're the same.