I have an 06 m5 it didn’t come with an aux cord so I ordered one and I recently installed it. When I took the center dash out and hooked it back up my climate stopped working so I started looking through the fuses to see if one had blown they all looked fine i disconnected the battery to reset it and still nothing, I gave it a rest and the next day I was looking at the fuses again I then started my car up and the gauges stopped working. I took the aux cord out to see if it was disrupting anything but it’s still not working. Does anyone know the problem before I take it to bmw and pay a ton of money??