A data distribution unit for a vehicle includes a wireless receiver configured to receive coded data wirelessly via a cellular network, a signal processor configured to decode the coded data into video data and audio data, and a wireless transmitter configured to transmit the video data wirelessly to a display and transmit the audio data wirelessly to a speaker. The method includes filtering each stream of a received signal, acquiring a new search space by acquiring a set of candidates having reliability greater than a threshold with respect to each filtered stream, and detecting a signal for each stream of the new search space. A movable ball is located with a fluid conduit that extends from the interior of the inlet tube to the location of the potable water source. In this manner, the head cleaning operation does not interfere with or move the tape.