Testing the old style GE motor is pretty straight up. Diagonal corners of the quick connect are differing windings. Power em both up at the same time then removing the power from one cord stops the thang from melt down after your test.
Note: power up both windings for a sec and see if she runs. Next Kill power and do test 2. Wait till she stops and flip you cord then jam em both in fer a sec to power it up and yank out one of them test cords to see if she run. Once yall see it's gonna work, unplug it quick to prevent harming the motor. The timer and a relay mounted on the backside do the motor starting and polarity reversing.