One of the bulbs on my Hella license plate lamp (K2807 model I think) is out and the numbers on it were unreadable. Does anyone know what bulb I need to order as a replacement? [Yes, I know there are two lamps and bulbs, but the other one is working and I don't want to screw it up by trying to pull it out and read it and then not be able to drive the truck tonight.

As always, thanks for the help,
John