Audi A4, A6, A8 TT models BOSE with RNS-D or TT (97-November01) ISO radio adapter harness, BOSE audio 20-284

ISO adapter harness for fitting a new stereo in an Audi A4, A4 Cabriolet, A6 or A8 with an original RND-D (Navigation Plus) radio with BOSE amplified audio system.

Also suitable for Audi TT built before November 2001 with BOSE amplified audio system.

Compatible with the following vehicles:

This harness adapts from the original ISO and Mini ISO connectors at the back of the head unit to standard aftermarket ISO connectors. The harness has a built in high to low level audio adapter to drop the speaker outputs from the new head unit to a low line level signal to work with the original amplifier in the car. The high to low level adapter has 4 dials to individually set the levels of each audio channel to give perfect sound quality.

Loose wires for connecting the cars ignition and illumination supply are provided