My batteries are in series, not parallel. I often get confused between the two. There are four wires, two from each battery running to the front of the boat to a four hole receptical. Pictured is the type of plug from the recptical to the foot control. There are only three holes in the back of the plug to accept wires. I thought I read somewhere that this type of plug has a jumper to make a parallel connection for 24 volt. My trolling stoped working and by using a volt meter I found the problem to be this plug. I have power at the recptical but not out of the plug. If I was 100% certain that this motor is 24 volt, I would hook up the batteries in the pack of the boat in parallel and only run two wires to the receptical however if the motor is only 12 volt, I would not want to throw 24 volts to it. So this is my dellima. Is there any way to tell what the motor itself is. The only info I have are the model number and serial number listed on the motor.