Hello dear buyer, we are specialized in selling auto parts. If there is any dissatisfaction with the item, please feedback with us first, we will surely give you a satisfactory solution. Installation nstructions: 1.Adjust the product to the exact location on the vehicle where it is to be installed. 2.Clean the bodywork of the area to be installed with a towel dipped in alcohol or water. 3.Keep the bodywork dry and free of dust, oil and wax before installation. Always heat the bodywork and the 3M adhesive on the product when the temperature is below 10 degrees Celsius. 4.Remove one corner of the 3M protective film on the back of the product and leave the film on the outside to overlap the product with the mounting position, then remove the film and press down. 5.Within 48 hours after the installation of the product (paste position) should not be exposed to water, oil, large dust. 6.If there is any problem, please contact us first, we guarantee to give you a satisfactory solution Note: For your shopping experience, I hope you are very like this item and buy it. Also, if you have any questions about the item, please communicate with the seller in time, we will surely give you a satisfactory solution.