We connected the day we brought it home. Simply used the small remote about two - three inches away from the mirror.
Clear the unit with the two outside buttons.
Hold them for 10 seconds and the small light will flash.
Press the programming button of your choice once and let go.
Small light on the bottom of the mirror will flash slowly.
Hold the remote about 2-3 inches away from the mirror on the button side.
Press the remote button and wait for the lights on the garage door opener flash.
Press the Homelink button you programmed and wait for the door to open or close. volia'
Works great with out Liftmaster Opener👍🇺🇸