Can-Bus-System für Anhänger relays.

The module can handle all signals tapped directly from the taillights. This without influencing the car electrics and without necessary programming of the on-board computer. Multiplex signals (2 light functions through one wire) are split automatically. The auto-fog light cut-off can be easily applied, without cutting wires, for cars with both 1 and 2 fog lights. The module comes standard with a safety mode where, in case of a defective trailer turn signal, the stand light takes over the flashing function here. Also optional is the possibility of disabling the reverse sensors when the trailer is coupled. The module is also applicable in all cases where car and/or trailer are equipped with LED lighting.

Among other things, it should be used for the BMW models from 2019.
 - BMW uses a.o. ( in the newer models) 1 cable for brake and lighting, here this set can be used for.