I have a 2005 227FS, which I'm wanting to add a trolling motor. I bought my boat new and it looks as though it came prewired for either a 12 or 24 volt system. It has battery storage on each side in the front and cables are there. The plug looks like it can be wired for either a 12 or 24 volt trolling motor, but I can't find a wiring diagram. I emailed Bennington and recivied a electrical diagram of main battery, radio and such but nothing on this plug. Can any one help me here? I want to add 24 volt trolling motor.