Larry,
I hooked up the red wire to centre rail and the black to an outside rail. With track voltage cranked up to 100% (about 16 - 16.2 volts), then using the transformer whistle/horn button, I could get all 3 motors to spin but producing only a very feeble whistle sound. A tiny drop of oil to the motor spindles did not help. Anything you can think of to get more volume out of these whistles?
thanks, Bob