Feed the guide cable through your frame using the magnet on your multi tool & the magnet on the guide cable to pass from exit to insert point. Then attach the correct asaptor from the multi tool to your cable that requires routing. Attach the magnet adaptor to this cable & connect the guide cable to the routing cable. Then simply drag the routing cable back through the frame by pulling on the guide cable. Sound tricky? It's really not. Check out the instructions added to the images & soon we'll make a video demonstrating how to use the tool!