I have done this conversion and if you have any questions at all...please email me. In fact, I kinda consider myself an expert on both 67 and 68/69 RS installations. There are a few lessons to be learned that I learned the hard way. For instance, the limit switches are one way. It does not tell you or show you this on any of the guides or schematics, but you have to have the wiring exact or the doors will not work. Also, I highly recommend grabbing a circuit breaker from possibly the junkyard (they work like fuses but do not have to be replaced and will reset themselves). When I did the installation, every time I did a test open/close, and the wiring was wrong, BANG, the fuse would pop and I would have to install another one. Not only was it a PITA, I ran out of fuses quickly. If you have any specific questions, please ask or if you just want a rundown, email me and I will send you my phone # to discuss fully.
sdkar@bellsouth.net
Steve