The check-control system is part of the vehicle electronics and, when ignition is started and while driving, monitors several vehicle functions such as the lighting functions (parking light, dipped beam, full beam, brake light, license plate lighting, reverse light, and rear fog light).
A failure of the lighting is indicated in the dashboard by light symbols, acoustic signals or in the multifunctional display of the car computer (partly in plaintext).
As there are vehicle types with as well as without check-control, we offer wiring harness extension kits in our wiring harness product range. These can be used as an upgrade to the basic wiring harness kit (7-pin or 13-pin). The check-control extension kits ensure a high-resistance and lossless tapping of the check-control functionality in the vehicle. Besides, the functionality is connected to the trailer by a steady plus supply (clamp 30).