No more problems with the LED lighting on the trailer/caravan in connection with CAN-Bus vehicles. On recent vehicles with CAN-BUS technology, the problem when connecting a trailer with LED lighting that the towing vehicle-side on-board computer issues an error message. The solution for the microprocessor-controlled LED CAN converter is plugged simply between the vehicle and trailer. The continuous positive is not needed, a current limiter is used to protect the LED light. The circuit works without rest current. The battery is unloaded. If an error occurs due to a short-circuit or overcurrent, shows the CAN-BUS an error message, because the adapter switches off. The LED adapter is not damaged, but after the elimination of LED light automatically switches back to its operating condition.This text is machine translated.