I had a Falcon when I was a young bloke in the 80's, and about 8 years ago I bought one from ebay and restored it over time. Its now almost a new built!!

I'm a bit confused about your servo having only 2 wires because it will need 3 (positive, negative and signal). To be honest, youre electronics are old and probably on the way out, and the Falcon its self is old and the plastic will be weak and brittle. One prang and its likely to break easy!

Have you got a few hundred spare? It might just be easier to buy something new, current, and with plenty of spares available.

If you want to stick with the Falcon, can you post a bit more about these 2 wire servos?? Maybe a pic of the wiring (from the pic you posted, it looks old and a bit cluttered).

The 2 pin connector with a black and red wire I suspect is probably the on/off switch.

Are you running an electronic speed controller, or the old manual 3 step controller with a servo?

Matt.