Can you give me pointers as to what you bought and how you fitted it?I have just wired up the my 08 plate tit x to use a newer Bluetooth module. I used a standard car audio 2 channel ground loop isolator (because it was 3 quid and there seems to be some debate about whether it is needed) and I have perfect sound quality from usb/iPod/Bluetooth streaming.
Is there any chance you can post pics of what you've done so utter moron newbs like myself can see what to do?This is exactly what I bought (but not from that seller)
I cut the plugs off both ends and then I joined the shield of both Channels together and soldered that to the ground for the aux cable and soldered left/right to the aux cable as well.
The I extended and inputs (shield joined) and connected them to the outputs of the bluetooth module ad per the diagram that is posted on here somewhere.
I have tested it thoroughly, I get no alternator whine or anything like that - I am using an ordinary usb cable and a female to female adapter so I can plug in an iPod cable or USB thumb drive and they both work fine (iPod needs a Y cable) and Bluetooth streaming works fine too. My ultimate plan is to run cables to the arm rest so I can keep my iPod classic in there.