On P38 this 20-247 cable should be used with item 29-661 if the car has a sub-woofer . The 29-661-HK has it built in .
Car models: The years stated refer to the model's years of manufacture, please check the item description for information about any changes there may be within these productions years.
Landrover - Discovery II (1998 - 2004)
Landrover - Freelander (facelift) (2003 - 2006)
Landrover - Range Rover II (P38A) (1994 - 2002)