I have a bad boy buggy with a Sevcon Millipak Controller (633T45312) that I just recently had a friend give to me. He told me it needed batteries so I replaced the batteries with brand new ones only to find out the front motor was bad. I had someone rebuild the motor and after getting it back together and running, it seemed to be fine with no fault codes. Then after a couple of mins it seemed to have influx and then loss of power. It would fluctuate power so I pulled it back up to the house. After doing this, I turned it off and back on with no faults showing. Then while slowing pressing the pedal it seemed to stall and I got 12 flashes on the controller. The motor appeared to get really hot to the touch as well. Even if I just turned the key on but didn't touch the pedal. One more thing... while I was waiting to get the front motor fixed I ran the buggy with only one motor (a very short distance) and the motor started smoking. I never got a fault code but I figured while I had the front motor off I would get the back motor looked at as well. So either way its not limited to one controller and I have read the fault code as a monitor tripped. The suggested remedy is to check the wiring but it looks to be right. Any help would be appreciated.