Staff Answer
Sep 24, 2026 - 07:13 PM
No, it doesn't matter. The thermal/ limit switch is a simple switch wired in series, so either wire can go on Limit In or Limit Out. Just make sure both connections are tight and the switch is clamped firmly to the boiler tube so it reads the temperature correctly. For more, see our post on Norcold thermal safety switches. If you have any questions, just reach out at info@rvfridgeguys.com or call us at 800-712-8822. You can find everything we carry at www.rvfridgeguys.com.
