1. Use the easiest way to quickly activate the AUX audio input of the your car, and then input your mobile phone music into the car. 2. Your car does not have AUX audio input, you must activate it to install the purchased for Android navigation, otherwise there will be no sound on for Android. 3. After successfully activating the your car AUX, it is only valid for this car, and it can no longer be used to activate other cars. 4. One-key operation and automatic activation; 5. The product is only applicable to for BMW CCC cars without AUX Step 1: Before activation, please turn off the car power and watch the installation video and instructions on how to activate and install the 3-wire terminal. Otherwise, you will not be able to obtain the AUX AUDIO menu and sound. Step 2: Remove the car's display screen, and connect the wiresas shown in the figure; Start the car and place the car displayon the Entertainment interface:Press and hold the button for morethan three seconds until the indicator light turns on; release the buttonto start activation Process. Step 3: After the activation process is over check the original car entertainment interface, AUX Audio shows that it has been activated;keep it connected! Step4: (important )!! After activation, keep connected, wait for 5seconds, then turn off and lock the car and let it sleep for 15 minutesDisconnect the negative pole of the car battery for another 1 minuteand then connect it back. Then get on the car and check the aux audiowas display, if the aux audio Note:After this product successfully activates the your car's AUX function, no other vehicles can be activated. Different batches may cause differences in label printing, which will not affect the use Color: black Material: plastic Package Contents: 1 x Aux Activator Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.