Hello together, I’ve already searched everything, found a lot about mass problems, but nothing that really fits my problems. We went under the campers a good year ago and together with my sister and my brother-in-law we bought a 93er Hobby 521 TSM Classic de Luxe. He looks great, very well maintained, but still laid a new floor and made the covers new. We also painted the underbody with WoWa underbody sealing. He had a hole in the rear light, since there were no spare parts, I patched the place with a repair kit. I guess now, however, that this hole just became a disaster for us, because unfortunately on the day after the purchase it rained so much that the rear light was flooded. As a towing vehicle a Golf 4, the AHK I installed myself, with vehicle specific 13-pin. E-set, also extended with permanent plus. At first everything worked without problems, only the NSL indicator lamp The WoWa has no NSL. Now to the problem, we now have massive mass problems, the rear lights become darker when braking, when I flash at the same time than wildly confused. At the beginning this error was minimal and hardly visible. With a 7-pin. transport trailer I do not have this problem. However, the NSL burns continuously, even if the ignition key is pulled off, but not on the vehicle. he NSL shut down on the vehicle no longer works, in between, but also not always. Another problem is the fridge, which initially worked super well and cooled at 25 degrees in the sun even on Lake Garda. But now it does not work on 12V (he has never, since I put the permanent plus only after the holiday) nor on 230V, even on gas not, it will initially be a little cool, you can feel that on the ribs, but then that’s it. ak already had a WoWa dealer checked, but he could not find a mistake. All resistances etc. were probably fine. I already searched the side of the caravan Ottos and got there tips for troubleshooting, would like to check everything with a friend, who knows himself better with electrics and caravans on the first March WE times and build a new clutch on his fend, but if you already had similar problems or have further tips, just to the electrics, d I would be very grateful!