Junction Connector Overhead Module Overhead Module 16 A B W-B 40 DA 41 DA W-B B 8 9 21 B 6 A B Garage Door Opener Switch Garage Door Opener GND9 +B X4(A) DA 48 (BAT) 10A D MPX-B 1 B 3H 7 3G 7 B Junction Connector L100 24 LX1 LX1 L4