Hello together. I built in my brand new Arona 1.0 Tsi with factory built-in AHK preparation, a Brink AHK with i.e. Jäger electric kit. That was also not a big problem, only when testing no signal comes from the socket to the trailer. Originally I thought that when preparing from factory, everything is already unlocked. Before I take everything apart now to check the cable, I would like to know if it was due to the missing unlocking Does anyone have experience with it and even have an AHK installed in factory preparation ?