| I've just taken ownership of a 325 saloon 01, with sat/nav, can anyone tell me if there is a wiring harness out there that will let me keep my original head unit and give me the RCA/Phono connectors i need to run an aftermarket amplifier. As i feel the quality of sound given from the standard system is very poor.
Also i'm wanting to upgrade the rear speakers, on the rear shelf, what size of speakers will i need to fit, i,m thinking about component speakers as these, i feel will give a better sound, i want to keep everything stealth. | 
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