Chamberlain B500 - Page 26

26
Installation
STEP 14 Wire the Safety Reversing Sensors (continued)
OPTION B PRE-WIRED INSTALLATION
1. Cut the end ofthe 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 wiresand strip 7/16 inch (11 mm) of insulation from each
end.Choose two of the pre-installed wires and strip 7/16 inch (11 mm) ofinsulation fromeach
end.Make sure that you choose the same color pre-installed wires for each sensor.
3. Connect the pre-installed wires to the sensor wireswith 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 connectto the purple wire.
4. Atthe garage door opener, strip 7/16 inch (11 mm) of insulation from each end of the wires
previously chosen for the safety reversing sensors. Twist the like-colored wires together.
5. Insertthe wires connected to the white safetysensor wiresto the white terminal on the garage
door opener.Insert the wires thatare connected to the white/black safety sensor wiresto the
greyterminal on the garage door opener.
Safety reversing
sensor wires
Pre-installed
wires
White
White/Black
Yellow (for example)
Purple (for example)
Wire nuts (not provided)
Pre-installed wires
Safety reversing
sensor wires
1
3
4
7/16" (11 mm)
2
Purple
Yellow
5
7/16" (11 mm)
Yellow
Purple
To insert or remove the wires from the terminal,
push in the tab with a screwdriver tip.