I'm new to your forum. I bought an old Mercury Thruster II TM. There is a black/yellow wire in the foot pedal that is not connected to anything. Does anyone have any ideas? I've never had a trolling motor before. Do you have to hold the button down on the foot pedal all the time to make the motor run? Any and all advice will be greatly appreciated. I just retired and am new to fishing. I've had a few boats before but have never fished.