I have been following this thread, but I am still a little confused about whether the Universal Remote kit will work. on my very old model 139.664300 garage door opener. If I understand correctly, the kit will eliminate the manual push-button. However, my door control unit mounted on the wall has two buttons that must be pushed simultaneously. There is only one wire (2 stranded), connecting the wall mounted unit to the opener motor assembly. The label on the motor assy says 24 Volts Push Button where the wires connect. I assume that the wire is providing +24 volts to the transmitter unit with the two buttons. There is no other power source for the transmitter! I am trying to troubleshoot this problem for my elderly mother who live 200 miles away. So I can't just run up there and have a look for myself. Her door works perfectly when the two buttons are pushed, but she has damaged the hand-held remote. After 30 years, the remotes are no longer made. How do I connect the Universal Kit to this type of door?