I have done several Phoenix installations and get along with them very well, they seem to me to be at the top of sound systems. I have a friend that wants to install one in his Aristo Live Steam Mikado, using the existing radio control, Will this provide the input needed to run a 2K2? He is thinking that the radio will play the bell and whistle on command. I guess he would use a wheel sensor to run the chuff. With a battery on board would a P5 work with an input board> I don't know any thing about the Aristo radio.