A method, system, and apparatus for indexing network traffic meta-data is disclosed. The chassis skirt panel is mounted below a truck body on at least one side of the vehicle and is set in a track allowing the panel to be moved back and forth. A capping device is pivotally fastened with respect to the housing to be pivotal into and out of capping engagement with the printhead. The base headlights may be pivoted in opposite directions from each other from their initial configuration about vertically extending axes so that their optic axes diverge or converge. A drive mechanism moves the filter so that regions of the filter pass successively over the open ends of the suction duct, where it may become partially blinded with sludge, and then over the water supply duct where it is backwashed. Rotating the dial switch mechanism will cause the rotating contact, which has three wiper contacts, to engage raised portions of the various cam contacts in various combinations to create various capacitance values between the switched terminal and the common terminal.