Chamberlain B4603TC Installation Manual page 27

Installation
STEP 13 Wire the Safety Reversing Sensors (continued)
OPTION B- PRE-WIRED INSTALLATION
Cut the sensor wires, making sure there is enough wire to reach the pre-installed wires from the
1.
wall.
Separate the sensor wires and strip insulation from each end. Choose two of the pre-installed
2.
wires and strip insulation from each end. Choose the same color pre-installed wires for each
sensor.
Connect the pre-installed wires to the sensor wires with wire nuts making sure the colors
3.
correspond for each sensor.
At the garage door opener, strip the end of the wires previously connected to the sensors. Twist
4.
the like-colored wires together.
Using a screwdriver, push in the terminal tabs, and insert the wire color connected to the sensor's
5.
white wire into the white terminal. Insert the other wire color connected to the sensor's white/
black wire into the grey terminal.
1
Pre-installed
wires
Safety reversing sensor wires
3
Safety reversing
sensor wires
White
White/Black
4
Pre-installed wires
Yellow
Purple
7/16" (11 mm)
27
2
Wire nuts (not provided)
Pre-installed wires
Yellow (for example)
Purple (for example)
5
7/16" (11 mm)
Purple
Yellow