If you rotate the shifter to the forward position, 9 on the right or low on the left side, and hold the rubber flap open, you'll see a little hole in the clip that holds the cable head. Put a little grease on the bare cable end and stick it through that hole. Gently work it down the innards of the grip shifter until it comes out. These can be a real pain in the butt, but keep at it. A drop of super glue on the bare cable end before you start will keep the cable from fraying. bk