Way OT - R/C Advice

So, this is way OT, but I always go to MGoBoard before I go anywhere else, because MGoBoard rules. It's spring, and I was out running the RC car around at a local park where they have an RC dirt track. My little cousin had gotten a car for Christmas, and he wanted to come along. That little car really suprised me, as it had no problem getting around this track. Much more powerful than I would've thought. However, the radio was not strong enough to reach the entire track, so he had to kind of follow the car around, which upset him a lot. I had an old radio and speed control lying around, so I told him, no problem, I can replace the electronics and you'll be able to do the whole course in no time. So, I ripped out the board from the car (it was an all in one board), and put in the radio and speed control before I noticed a problem. The steering servo is not a normal servo. There's no signal wire, and it's not proportional. It's either left, or right, full, and it's a non-standard servo size too, so I can't just replace it. So now I've broken his car, because I've tried several things, including ripping the board out of another servo and soldering the motor's leads onto that board. Nothing. So what I need is an R/C switch, with three positions, essentially off, on, and reverse, in this case off, left, and right, preferably with, or ready to accept, Futaba leads. Anybody know where I can get something like this?