I just ordered the Coleman Mach digital thermostat to replace the original in our unit. You will find Coleman's analog thermostats can vary widely with the temperature settings. The digital can be set to much lower than 55 degrees as in the original. This can save a lot of propane when monitoring freezing temperatures when you haven't winterized.
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2007 Ram 2500 5.9L Cummins(SOLD)
2015 Ram 2500 6.7L Cummins 4WD