To your product manual for the location of the learn button. NOTE: Your product may look different than the products illustrated in this manual. TO CONTROL THE GARAGE DOOR OPENER LIGHTS. With the door closed, press and hold the remote control button that you want to control the light. LOCK. LIGHT. Press and. And Programming 971LM and 973LM. Question about Craftsman LiftMaster Chamberlain Garage. Uprade to Transfer Code from existing marantec.