1. It is strongly recommended to find a professional (not a repairman) to install the button switch. The button switch is a functional component, not a plug and play one. Please believe that "there is expertise in ". 2. Please carefully confirm whether the switch is suitable for your steering wheel before purchasing. If you are also unsure, you can contact our salesperson. Thank you. 3. The wiring harness in our link is a regular harness or non heated harness, with a 12 pin socket suitable for non heated steering wheels; Please confirm whether the steering wheel has a heating function before purchasing. 4.The 2015 year of car has a difference plug with our's cable plug, Please attention the 2015 year of car , the clock spring interface is length than our's cable plug . Don' suitable 2015 year's car. 5.100% New Type: Multifunctional Steering Wheel Button Panel Compatible with the following vehicles: Special for 2011-2016 (except 2015 year) Colour:As Shown Material:ABS Package Contents: 1 x Bluetooth panel 1 x Button 1 x Cabble 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.