Hornball, Any luck finding the #? I took my light switch's light bulb into the dealer while getting a new power window channel assembly for my daughter's Jeep. The parts guy "just happened to put a few away" the day before and had no idea what they were for (he remembered seeing them because of the long shaft). The shaft of the new bulb was about 1/4" shorter, but seems to work OK. He couldn't find anything else that even looked close. I didn't get the part number as my daughter paid for it (~ $3. 00) while I was putting it in the truck to make sure it would work. I also need the bulb for the dimmer switch side, but noticed the main-side bulb is too big to fit into that hole -- I bought the truck used, and the dimmer-side bulb is missing. If you still need the number, I can get it from my daughter.