Switches report or trigger a state in the pneumatic and electrical circuits of a truck. A pressure switch closes a contact when line pressure crosses a set figure, a stop lamp switch lights the brake lamps, and the splitter and range switches on the gear lever tell the gearbox valves which group to select. They are ordered by switching pressure, thread and contact arrangement.

Switch is grouped into 3 sub-categories:

This category lists 23 Büyükdemir references cross-referenced against 59 original equipment numbers. The cross-reference tables cover Scania, Volvo, Iveco and Renault parts.

Most looked-up references in this group: Brake Switch Light, Mechanical / Bremslichtschalter 9-9430, Stop Lamp Switch Air Actuated / Bremslichtschalter Pneumatisch Betätigt 9-9200, Stop Lamp Switch AirActuated / Bremslichtschalter Pneumatisch Betätigt 9-9300, Switch 9-9435, Switch Splitter Gearbox 7-1200.

Manufactured by Büyükdemir Otomotiv in Istanbul, a producer of truck and trailer air system parts since 1957.