The original vehicle wiring loom may not match the ISO plug used by the majority of aftermarket head unit manufacturers. Cutting the original vehicle wiring loom may invalidate the vehicle warranty. To overcome this difficulty, AUT PC9-404 is for higher specification cars that have an amplified speaker system fitted as standard. For PC9-404 use speaker version with headunits that have speaker output only.

This adaptor lead fits the following models:

• Audi A3,A4,A6,A8 and TT-RCA

*Not suitable for cars with amplified speaker systems.