Now that you understand the difference between Primary and Secondary controls, here is what a typical installation looks like in a lowered floor minivan for a wheelchair driver. The Chassis typically is mounted up front in the vehicle next to the passenger seat, and does not inhibit wheelchair maneuvering into the drivers area.The Servomotors are located under the drivers dash area and connect mechanically to the steering column and the gas/brake pedals. These servomotors can be “disengaged” to allow operation of the vehicle utilizing the factory controls in less than 10-seconds, and do not interfere with the driver. The specially designed Mounting Systems are required for all AEVIT 2.0® Input devices and VGA Displays. They feature shock ball mounting with articulating arms that allow all controls to be positioned perfectly for each driver. They are available in door and floor mounting designs.