Connects2 T-Harness SOT Leads are primarily when installing Parrot Bluetooth Car kits but can also be to install other bluetooth devices and hands free kits into the car. SOT lead is designed to interface between the radio and the radio harness. It provides a power and earth supply to the handsfree kit and route the phone audio through the cars front speakers. No vehicle cables need to be cut. Compatible with the following vehicles: Car Make / Model Year Remarks Land Rover Discovery 2005 Onwards Harman Kardon Premium Connection: OEM Specific Land Rover Range Rover Sport 2005 Onwards IMPORTANT NOTE: Please make sure that is the correct SOT Lead for your car by firstly checking to see if your make, model and year of car is listed in the advert. Secondly by checking to see if the connection in the picture listed is the same as you have in your vehicle.