Autopilot Issues


I am fairly new at this. I am trying to put an autopilot into an existing aircraft modification, that did not have one before. The altitude works, and I can adjust the heading, but it will not allow me to turn the heading and a few other swtiches on. The only one that woprks is altitude. I have tried a few different autopilot panels and they all do the same thing. I have gone through the aircraft.cfg file and it looks like everything is enabled. Any ideas?