Literally took no more than 15 minutes. I unscrewed the back panel of the door, unplugged the old keypad and pealed off the old keypad. I used rubbing alcohol to thoroughly clean the surface where the new keypad would go. Then I slid the new keypad into place and plugged it in. Peal off the adhesive backing and stick the new keypad down, reattach the door panel and you are good to go.