Why isn't my PowerTap computer showing watts? June 07, 2021 13:35 Ensure the hub is awake by spinning the rear wheel. Perform a "find"� on the on the Joule/Joule GPS by pressing and holding the "+" and "-" buttons for 3 seconds. Spin the wheel to wake up the PowerTap. Zero the torque (see our video instructions for Joule GPS and Joule). Comments 0 comments Please sign in to leave a comment.