CHAMBERLAIN WHISPER DRIVE MODEL 248739M need to know how to hook up wires since my wall switch has a light and a lock function. Hopefully someone can show a picture or diagram how to wire the garadget in to the opener. Thank you!
As with most compatible Chamberlain/Liftmaster models WD822KD, WD832KD 248739 1/2 HP are connected to red and white terminals:
Complete user manual can be found here