Staff Answer
Sep 27, 2026 - 11:50 AM
The N4150 has a DC terminal block at the back, marked positive and negative. Run the RV's 12V positive to + and negative to -, using the wire gauge in the N4150 install manual (the DC heater draws a lot of current, so it needs heavy wire). Keep it fused, and make sure the connections are tight. If you're not sure which RV wire is which, have an RV tech check it with a meter before connecting.
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