Backup light functions

In case of a malfunction of the rear lighting function, some modern vehicle types switch to an alternative lighting function until the original lighting function is restored. For example, if the rear flashing light fails, the reversing light will be switched to flashing mode. However, this backup light function must not influence the functionality of the trailer lamps. The ERICH JAEGER trailer control devices of the vehicle-specific wiring harness kits recognize the backup function and guarantee a flawless functionality of the trailer lighting.


Due to the increasing complexity, the installation of universal wiring harness kits into vehicles with backup light functions is merely possible as an exception. We recommend an installation of a vehicle-specific wiring harness kit.