Hi everyone, I recently installed a new HU into my 07 GTI. The problem is that the head unit won't shut off, and I get no sound from any of my left side speakers. Front or rear. I've checked my wiring multiple time and everything is matched up right. The only thing I can think of is the 3 brown wires in the harness adapter. They are plain brown wires no stripes and say mute on the sheathing. Any helpful tips and advice would be greatly appreciated because my wife wants me to take it to a shop.