I have a Melex golf cart not sure what model. The resistor is overheating - it is glowing red almost all the time. even if I have the key off if the directional lever is in the forward position the coil will over heat and thereby drain the battery. I need assitance trying to figure out what model I have and what the problem is. I understand that I may need to post picture to help identify the model and will get those as quickly as I can.