Step1: please clean the place with 50% alcohol to make sure no dust.

Step2: remove the  glue in back.

Step3: heat the  glue by hot air gun; (A tip for putting on with supplied tape is to warm the handles and the covers this makes the glue on the tape more sticky and they will stay on forever!)

Step4: install the products in the right place, Don't wash your car within 48 hours.