In the case where a printed board is contained in a casing of an electrical junction box, and where electrical components such as relays disposed on the printed board are connected to a bus bar disposed in the casing, a heat generated in the bus bar is uniformed in the casing without causing an uneven heat distribution around the bus bar, thereby requiring no means for radiating the bus bar. A high definition video camera sends a video image in real time. In vehicle operation, the trimset value is used as an offset to the relative position sensor signal to accurately determine damper position relative to its compression and rebound limit positions. In a preferred embodiment, a means for imparting rotational movement to the fastener is attached at a distal end.