You have a question about an ERICH JAEGER product or concerning the installation of your wiring harness kit for trailer towing devices? Browse through our FAQs on control units, wiring harnesses and further components and you might find your answer.
Why does the power supply have to be directly from the battery (permanent positive clamp 30)? Can a different power source be used?
To ensure the hazard light system on the trailer is active even after a breakdown, and that the parking lights work when the vehicle has been shut down, connection to a 12-volt permanent positive supply is absolutely necessary.