Next, you will want to establish about three inches of overlap between the newly-trimmed end of the Factory Cable (this is the new Tail End) and the Handle End of the G-Force Trolling Motor Handle (this end is what you threaded through the small and large washer).
Pinch the three inch overlap of these two cables together and tightly wrap a layer or two of black tape around the two overlapping cables so they are secured to each other.
This should easily allow you to fish the new cable through the trolling motor as you pull the old cable out by the handle end.
Before moving on to the next step, pull the Factory Cable and then the G-Force Trolling Motor Handle cable through the trolling motor, fished all the way through until the G-Force washers come into contact with trolling motor.