AFAIK, RL01/RL02 bulbs are #73 (14V.) and RA8x bulbs are #86 (6.3V). At least, that's on my webpage, and I think I got that from a manual or - Henk, PA8PDP. ________________________________ Van: cctalk-bounces at classiccmp.org namens Robert Armstrong Verzonden: ma 05-03-2007 20:46 Aan: cctech at classiccmp.org Onderwerp: Replacement bulbs for RL0x and RA8x drives? Could somebody remind me of a source for proper replacement bulbs for the RL01/2 and RA8x drives? Sorry if this is a repeat question - I was pretty sure it had been discussed before, but I couldn't find an answer. BTW, the RL0x and RA8x bulbs are mechanically similar, but they're definitely not the same bulb. Thanks, Bob Armstrong This message and attachment(s) are intended solely for use by the addressee and may contain information that is privileged, confidential or otherwise exempt from disclosure under applicable law. If you are not the intended recipient or agent thereof responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please notify the sender immediately by telephone and with a 'reply' message. Thank you for your co-operation.

This should be what you're looking for: http://www.atlantalightbulbs.com/ecart/nw012104/GE73UNIT39218.htm