Has anyone out there installed one of these fine HU's with a PAC TR-7 video bypass device? I have and it works a treat apart from a dodgy high pitched noise coming from the rear speakers. I think this is caused by the PAC TR-7's green wire thats connected to the blue/white remote turn on wire from the alpine HU. Once disconnected the noise is no more but obviously in doing so the rear speakers have no remote turn on signal and no longer work. I've noticed many people saying bypass the rear amplified speakers altogether and just wire them up the the HU. Is this the optimum thing to do and will the sound quality suffer as a result of doing this? Also I fitted the Autoleads PC5-90 antenna signal booster to the W200 and connected the blue wire to the blue power antenna wire on the HU harness. The radio signal is still very poor and wont even pick up radio 1/2! Is there anything else I can add to boost the signal even more without adding a roof ariel? Any help would be great. Cheers.