[spareparts]

you need to determine if it is a 3 wire motor or a two wire motor, if its a three wire motor, it will have one for up( blue), one for down( green), and one for ground(black). Go to the relays and check for voltage coming out of the relay when its ingaged(cehck the blue when triimng up, green while down). If its a two wire, not only do you need to check for voltage, you need to check the other lead for aground( the two wire doesn't have a dedicated ground wire, it operates thru the relay not being used, it has a normal path to ground, if you don't have the path to ground, you can suppply it witih all the power and it will never work