So far I have not yet tried the New Controller just been changing plugs on it for now to match mine. I tried that MOSFET tests held black probe on black wire from controller and 1st tried green Phase wire with red Probe But never got a reading at all on all 3. the meter just stayed on 1. thats on 200 ohm mode tried same on diode it was counting up numbers like 1.5 etc but after a while just went to OL again I got fed up in the end so may try new controller soon.Much better.