LEDs are not a great idea for backups so I am deciding to go for hyperwhites. I bought some 7440s sometime ago and realized they wouldn't fit, socket was too big but the bulb was just a little smaller. I forgot what number was on them at the time.....I'm too lazy to peel that trunk liner again. No they're not listed in the owner's manual. I think someone posted a thread with all the bulb types on the car, I searched and couldn't find that thread.

 

Duh OK I think I found the answer. It's 921 I think. Someone correct me if I'm wrong.