An electrical connection box for a vehicle has a low-voltage bus bar and a high voltage bus bar, received in groove structures of a first insulation plate. A method for operating an amphibious vehicle, which may be a military amphibious vehicle, having a hull which accommodates the crew of the vehicle, a flow duct which extends through the hull, and a water jet drive arranged therein for driving the vehicle on water, includes closing off at least one end of the flow duct by an anti-mine element when the vehicle is travelling on land. The method allows the base station to switch between the master and slave modes dynamically according to variation of the communication environment, resulting in efficient clock synchronization. Each of the alignment troughs has a longitudinal axis substantially parallel to the wheels horizontal axis. The Edges are reinforced with double layer, folded over, material.