Dockin sensor on Roomba

@alligoodst use this video to work on it. The sensor is available at multiple sites. All you would need is an online search and select the site that is meeting your needs. Another way to get access to the sensor is by carefully removing the plastic piece on top of the bumper which simply snaps into place. Beneath that cover you find a second piece of plastic which is held in place by 6 screws. Remove those and then the cover. You should now have access to the sensor and the wiring.