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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

I an using an MRC 130 watt transformer. (Bought it from a retired model railroader, so I don't know its age.) Tried various powers from 1/4 through to full. Barely any motor spin at low voltages with increasing, but not adequate whistling, at full. It's as if I need more voltage. Maybe I do need to bypass the gray resistor. It is labelled R31. It is soldered into the board. No idea how to bypass. Can you tell he how?

Thanks to all, Bob

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