The new GE blower motor is missing an orange wire, how to connect it properly?
The 4 wires coming out of and returning to to motor are for reversing the rotation of the motor. If you unplug them and switch them the rotation will switch. The yellow wire is most likely the common wire. The others are speed taps. Red is low, blue is medium and black is high (usually). The two browns go to the capacitor. I would need to see the wiring diagram to be sure but that is the usual wiring setup on furnaces. The orange wire was most likely medium high.