This thermostat wiring harness was used on the early HS2000 and HS2800 and all HS1600 and HS1800 Propex heaters.
You can differentiate this harness from the 2015 to current version by noting the difference in the connector.
- This older harness has five wires going into a five-pin connector
- The current harness has five wires going into a six-pin connector
Please make sure this is the harness you need as there will be no returns accepted.