Hi, im removing my s3 bose concert tape player stereo with no cd changer or cd player for a sony one, I ordered a pc9 410 lead as ive been told that this will connect the cars wiring harness to the sony head unit, no luck, went into my local dealer and he's charging £50 for the lead I need, could anyone point me in the direction of a place on here or online that does such a lead just for a better price? Thanks