Heh.. I can't be better than factory instructions but I'll write you my own :P
Remove the two black plastic cover on the front of the seat rail
You'll see two E-Torks, unscrew them (with the proper E-torks socket)
slide in your deactivation bar (check with the belt buckle to be sure your installing it the proper way)
plug the bar in the appropriate connector located under the seat.
rescrew the two E-torks (or use the longer one you may had received with your deactivation bar)
Go to the dealer for activation
Have fun !