You want to tow a trailer. What must you note regarding the electric cable between the towing vehicle and the trailer?

When towing a trailer, it is essential to ensure the electrical connection between the towing vehicle and the trailer is safe and functional. First, the electric coupling devices must be undamaged to prevent electrical faults or disconnections during travel. Second, the onboard voltages of both the vehicle and the trailer need to match, usually 12 volts, to ensure that the trailer's lighting system operates correctly with the power supplied by the towing vehicle. Finally, before starting your journey, always check that all lights on the combination (brake lights, indicators, tail lights) are working properly. This ensures your intentions are clearly communicated to other road users, enhancing safety. These steps are required by German traffic regulations to prevent accidents and ensure that trailers are safely integrated with towing vehicles.