Answer
Sep 29, 2026 - 10:37 AM
For a GE 3-wire RVAC wall thermostat, connect the thermostat terminals directly to the matching terminals on the RGREC3A control:
A = +12VDC
B = 0VDC / Ground
C = Communication signal
Connect A-to-A, B-to-B and C-to-C between the control box and thermostat. The individual wire colors may vary, so identify which conductor is connected to each terminal rather than relying on wire color.
The RGREC3A also requires a separate 12VDC and GND power connection from the RV to the control box.
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