the transformer has 3 voltages. 6, 24, and 36. I believe. i do know that when you press the power button the KM1 relay should pull in and stay in. then if you move the lever to forward the KM2 relay will pull in and reverse KM3. if 1 is in put it in forward and press the #2 relay. that should start the motor. if your blowing fuses then you have a short, not a bad transformer. i would think