Bakkekontakt

Bakkekontakt, often translated as "reverse light switch" or "backup light switch," is a component in motor vehicles responsible for activating the rear-facing backup lights. It is typically found on the transmission or gearbox of vehicles equipped with a manual transmission. When the gear lever is moved into the reverse gear position, internal mechanisms within the transmission engage the bakkekontakt, closing an electrical circuit. This circuit then provides power to the backup lights, illuminating them to indicate the vehicle is backing up.

The bakkekontakt is a simple yet crucial safety device. Its primary function is to alert other road users, pedestrians, and cyclists of the vehicle's reverse motion, reducing the risk of collisions. In some jurisdictions, functional backup lights are a legal requirement for vehicles. The switch itself usually consists of a plunger or lever that is moved by a component within the gearbox when reverse is selected. This movement completes an electrical connection, allowing current to flow to the bulbs.

While most commonly associated with manual transmissions, automatic transmissions often employ similar logic, though the actuation mechanism might differ. In older vehicles, the bakkekontakt was a mechanical switch. Modern vehicles may use more sophisticated electronic sensors integrated into the transmission control unit, but the fundamental purpose remains the same: to signal the engagement of reverse gear. Troubleshooting issues with backup lights often begins with inspecting the bakkekontakt for proper function and connection.