ATTACH A GROUND "AT" YOUR PHATBOX IN THE REAR!
Trust me, if you made the correct wiring connections grounding at the phatbox in the rear will make it work!
I know, I went thru this. I didn't exactly a wiring connection problem but I did find out that if you have a B5 Audi with the CD changer cable running to the rear and you add the Phatbox with the RNE-E. You'll need to ground the Phatbox.
Trust me, if you made the correct wiring connections grounding at the phatbox in the rear will make it work!
I know, I went thru this. I didn't exactly a wiring connection problem but I did find out that if you have a B5 Audi with the CD changer cable running to the rear and you add the Phatbox with the RNE-E. You'll need to ground the Phatbox.