Compatible with Volvo XC60 and XC90 models from 2003 to 2014. Easy installation with clear connection instructions. Durable plastic material ensures long-lasting use. Designed to enhance audio connectivity in your vehicle. Includes necessary cables for power and audio input connections. Connection Instruction: 1. Please take the black plug A out of our decoder box's Fiber-Optic interface C, then remove the grey plastic protective cover D; 2. Please find and remove your car's original Fiber-Optic plug B; 3. Connect your car's original Fiber-Optic plug B to the removed black plug A of our decoder box's Fiber-Optic interface(in step 1); 4. Then reinsert the removed black plug A to our decoder box's Fiber-Optic interface C; 5. Plug the "Power and AUX Audio Input Connection Cable" in the power socket of our decoder box, connect the cables on the other ends like this: Red ACC Cable: to ACC cable(usually it is the red cable from aftermarket head unit main harness); Yellow BATTERY B+ Cable: to Positive pole of car battery(usually it is the yellow cable from aftermarket head unit main harness); Black GND Cable: to GND cable(usually it is the black cable from aftermarket head unit main harness); AUX-RIN, AUX-LIN cable: to the Front Right and Front Left AUX audio output port of aftermarket head unit. name: Decoder Colour: As Shown Material: Plastic Compatible Car Models: for Volvo XC60 XC90 Most 2003-2014 Package Contents: 1 * Decoder,1 * harness