Chamberlain B1381C Owner's Manual page 25

Installation
STEP 13 Wire the Safety Reversing Sensors (continued)
OPTION B - PRE-WIRED INSTALLATION
1. Cut the end of the safety reversing sensor wire, making sure there is enough wire to reach the pre-installed
wires from the wall.
2. Separate the safety reversing sensor wires and strip 7/16" (11 mm) of insulation from each end. Choose
two of the pre-installed wires and strip 7/16" (11 mm) of insulation from each end. Make sure that you
choose the same color pre-installed wires for each sensor.
3. Connect the pre-installed wires to the sensor wires with wire nuts making sure the colors correspond for
each sensor. For example, the white wire would connect to the yellow wire and the white/black wire would
connect to the purple wire.
4. At the garage door opener, strip 7/16" (11 mm) of insulation from each end of the wires previously chosen
for the safety reversing sensors. Twist the like-colored wires together.
5. Insert the wires connected to the white safety sensor wires to the white terminal on the garage door opener.
Insert the wires that are connected to the white/black safety sensor wires to the grey terminal on the garage
door opener.
1
Pre-installed
wires
Safety reversing
sensor wires
3
Safety reversing
sensor wires
White
White/Black
4
Yellow
Purple
7/16" (11 mm)
25
2
7/16" (11 mm)
Wire nuts (not provided)
Pre-installed wires
Yellow (for example)
Purple (for example)
5
Yellow
To insert or remove the wires from the terminal,
push in the tab with a screwdriver tip.
Purple