I have a USA Trains GP9. It was shipped to me and the trucks have been kinda destroyed. I have the truck motors but the wiring has been disconnected. Can anyone help me about the following.
If you look down at the truck motor with the 4 pins on the right side, there are two pins on the upper side and two pins on the lower side. I can assume one pair is for power pickup and one pair is for driving the motor. If that is a correct assumption, can someone tell me which two pins are for power pickup? Then the other two pins would be to drive the motor.
Or do I have this completely wrong? I’m trying to understand which wires go to which pins.
Thanks for any help anyone can give me.