Reply to "Wiring Schematic for Lionel #38053 L2a Mohawk..."

SPFord27OGR Forum Member

gunrunnerjohn posted:
Actually, with no serial data, the symptom is normally it takes off at full speed as soon as you crack the throttle. Check the 4-pin connector from the motherboard to the CC-M.
I only see two wires in the PWM connector, so you have no 5V to activate the opto-isolators, that's your problem. This connector should have four wires 1:1 from the motherboard to the CC-M, I think that will fix the problem.
You have no power to the input optos.

The harness with the new cruise m comes with a 3 wire set up for J1. 1, 2, and 4.

1/20/1912:30 PM

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