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 PC9-405 is for higher specification cars that have an amplified speaker system fitted as standard. For PC9-405 use RCA version when the headunit is equippied with RCA output.

This adaptor lead fits the following models:

• BMW Amplified System- RCA