Hi all, I'm experiencing intermittent loss of sound from the rear door speakers. I'm guessing a loose connection because it has a habit of coming and going depending on whether or not I hit a bump in the road. It's an A6 avant C5, 2004 Final Edition model with the RNS-e sat nav. As an aside, I just fitted a replacement GPS antenna and checked the connections to the rear while I was at it. Everything seems to be fine there, so I'm needing to know where the wiring for the rear speakers is located so I can check the connections. I'm assuming it's not the speakers themselves as they both go on and off together, so it's more likely a connection back to the amplifier. Can anyone point me in the right direction? Thanks in advance, A.