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      What do the 3 or 4 JB20/RIH cables do?

      highlights of the JB20 cables

      Cable 1 is power to the RIH and solenoid valves.

      Cable 2 is communications RIH to DM/Moxa. It's also used for pulsers 1 - 6.

      Cable 3 is the RF system (FR55 or FR200) and the vehicle detector, and pulsers 7 - 10.

      Cable 4 is used for pulsers 11 - 16.