Hi, just fitted a Westfalia towbar and used a universal bypass relay to my T5 (61 plate), had a few problems as the wiring diagram supplied with the relay was wrong but sorted those out. Now have a problem where the fog lights on the trailer board are permanently lit when connected to the van! I've used the correct wire from the vehicle and tested with a light tester and that works fine. Something seems to be providing a 12v feed all the time to the fog lamps even if not switched on. Wondering if the relay fog transistor has an open circuit which is why it won't switch off. Has anyone had same problem fitting a bypass relay or is it just me? Grateful for any advice - thanks!