TRC UNIVERSAL IRRIGATION REMOTE CONTROL Operation And Installation Manual page 24

Direct Controller Interface Cable
For the Irritrol MC , Dial and Superior Controllers
 
To connect the DCI-1 Cable:
Remove the faceplate from the controller. Hook the molex re-
ceptacle directly to the 6 pins on the circuit board of controller.
Do not force it in--it should fit only one way. Punch knockout
hole from the bottom of the controller. Position circular end of
DCI-1 cable through knockout hole and attach with screws. This
connector should remain with controller. Replace controller face-
plate.
To connect the DCI-2 Cable:
WARNING
TRC COMMANDER RECEIVER MUST BE
CONNECTED TO 37-PIN CLAMSHELL BEFORE
CONNECTING DCI-2 CABLE TO CONTROLLER.
First connect the 37-pin clamshell directly to the TRC Commander
Receiver. To operate the Receiver, attach the DCI-2 circular plug
to the DCI-1 connector at the controller knockout location. Align
pins and twist connector on with a clockwise motion. Do not
force it in--it should fit only one way. This cable is removable and
allows portable hookup at each controller.
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