Using a #2 Phillips screwdriver and a 3 mm hex bit or wrench, remove the three cable clamps that secure the power cable and the transducer cable to the trolling motor mount.
If necessary, pull the transducer cable out of the channel in the trolling motor mount.
Remove the plastic cable clamps that secure the transducer cable to the coiled power cable.
You should keep these cable clamps in a safe place, because you must reinstall them later.
Push from the inside out to remove the square grommet that holds the transducer cable in the shaft cap.
Remove the grommet from the transducer cable.
The grommet is split on one side to make it easy to remove from the cable.
You should keep the grommet in a safe place, because you must reinstall it later.
Feed the transducer cable through the shaft cap from the outside in until it is no longer routed through the square hole.
that holds the transducer cable 
in the shaft cap.
