Do I need to connect the serial data out to the sound system from J4’s pin 2 on ERR’s CCM?

FlyPlanes-PlayTrainsOGR Forum Member DIGITAL SUBSCRIBER

I’m starting a Cruise Commander Modular install, and I was wondering about pin 2on J4. I was going to use the ERR supplied 10 pin connector to the blue serial data in from the R2LC at pin 1, and solder it like shown in their example. This ERR 10 pin connector also has a green wire at pin 2 for serial data out to sound. Do I need this green J2 wire, or just the 1 blue serial data wire shown in their example?

It’s a pre-odyssey Lionel 6-18589 tmcc Alco 420

Thanks....

Tom

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2/26/203:44 PM

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