Connecting opener power cables, Master operator, Slave operator – GTO 2502 User Manual
Page 24: Step 4, Step 6, Step 5

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Step 4
Insert the stripped power cable wires into the appropriate 
terminals on the MASTER operator terminal block. The 
green wire should be inserted into the GRN terminal, the 
blue wire into BLU, the orange wire into ORG, black 
wire into BLK, and the red wire into the RED terminal.
Tighten the set screws against the end of the wires. A 
dab of petroleum jelly on each terminal will help prevent 
corrosion.
Correct
Wrong
Wrong
Wire
Terminal 
Block
Terminal 
Block
Terminal 
Block
Wire
Wire
Connecting Opener Power Cables
MASTER Operator
Step 6
Strip approximately 3/16" of insulation from each wire 
of the 40 foot power cable. Twist each exposed wire 
tightly. Insert the second opener power cable upward 
through the right strain relief (if necessary, loosen the 
sealing nut). Thread approximately 4" of wire into the 
control box. Retighten strain relief (on the black sheath 
of the power cable) until the power cable locks into 
place. 
Insert the stripped wires of the power cable into the 
appropriate terminals on the SLAVE operator terminal 
block. The green wire should be inserted into the 
GRN
terminal, the blue wire into BLU, the orange wire into
ORG, black wire into BLK, and the red wire into the
RED terminal.
Tighten the set screws against the end of the wires.
Step 5
Review the Installation Overview illustration on page 11 before proceeding.
 
Cut a slot into the driveway to accommodate PVC conduit (not provided). The buried conduit will protect the 40 foot power 
cable from automobile tires, lawn mower blades, weed eaters, and grazing animals.
Pull the 40 foot second opener power
cable through the conduit and secure them into the slot in the driveway.
SLAVE Operator
Power Cable from the Operator
RECEIVER
SWITCH
MASTER INPUTS
GRN
WHT
BLUE
BRN
ORG
RED
BLK
COM
COM
CYCLE
CLOSE
SAFETY
EXIT/
OPEN
SHADOW
LOOP
CLOSE
EDGE
OPEN
EDGE
BLK
GRN
RED
STALL FORC
E
MIN
MAX
SWITCH
RELA
Y OUT
SLA
VE INPUTS
GRN
WHT
BL
UE
BRN
ORG
RED
BLK
NC
RL
Y-COM
NO
MASTER INPUTS
GRN
WHT
BL
UE
BRN
ORG
RED
BLK
COM
COM
Power Cable from the
Slave Operator Arm
