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Reply to "Question Regarding Any Upgrades for a Southern PS-4 Model 6-11103"

The only "required" connection to the CC-M is the serial data to pin 1 of J4, and of course the two connectors from the old DCDR or DCDS.  I've never found a use for the signal on pin 2 of J4.  The other eight pins are four for two operating ditch lights, and four for driving marker LED's.  They are, obviously, optional connections.

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