Cannot get USB or Ebay AUX cable to work.

Hey

I have a 1.6 VTR+ with the JBL sound pack, i have been pulling my hair out trying to get either the USB box pictured below or a cable i got from ebay to work in the stock stereo.

I had original got the USB box connected to the Multi CD changer port on the back of the stereo, went into Lexia, found the "USB installation" in the radio config and ran that, nothing. Then i went to the Global Test, then Radio and Manual configuration and tried all the options for the Aux ports none of which work.

I then bought a cable from ebay and popped that in the other free port on the back of the radio and enable classic on both ports but i still have no audio.

Really want to get this stereo working with an AUX input as ive tried aftermarket stereos and they don't play well with the reverse sensors or the subwoofer leading to an awful experience.

I have attached a pic from the net of the USB box (looks exactly like mine) and the ebay cable.

Thanks for any guidance.

Paul