Motor to boat wire harness

My warning buzzer had quit working and I finally found the problem. The wire harness was installed too tight from the motor to the boat. It was rubbing in the transom boot and finally wore thru the harness and one of the small wires inside. The warning buzzer is the only thing that seems to be affected. Two questions: 1) Can I splice the one broken wire, and if so, what can I use to place around the wires and cables (without disconnecting them) to allow them to move un-restricted in the transom boot after the splice? The splice will tend to bind when the motor is turned. 2) If I should replace the whole harness, does anyone know the part number? The motor is a 2004 DF250.

You could put blue heat shrink butt conn. But keeping the exposed wiring sufficiently protected may be tricky; elec. Tape, heat shrink tubing? If using a binnacle control box, key switch 37100-93j00 ($97.00) must be changed because wiring harness changed after 05; 21 ft. Wiring harness 36620-93j02 ($193.00) or 26 ft. 36620-93j62 ($265.00); 36620-93j20 ($98.00) 04 motor to 06+ wiring harness adaptor;there are also 6 ft and 10 ft harness extensions available.