I have a Minn Kota Maxxum Pro 101 & have drawn a blank on how to hook the 3 batteries to the trolling motor. Since this heart attack I have problemsr remembering things.Thanks for your help.

Battery 1 black to battery 2 red. Battery 2 black to battery 3 red. You now have a 36v battery with an open red on @ battery 1 and open black on battery 3. Those posts get the wire from the trolling motor (or switch if you have one). 

Thank You I though that but was not sure & did not want to short something out. Some days I have to check my ID to see who I am. Thanks Again

@scbassin not sure what kind of boat you have, but be sure to check the plug if you have one. Some of them have an option to jump at the plug with little plates. If my memory serves me right, those plugs have 4 prongs, but there may have been others.