That fan really bothered me when we first got our TT, especially at night when all was quiet and it was all I could hear. The more DC amps the TT pulled, the more fan would spin and the louder it got. I replaced all my incandescent bulb to LEDs to minimize the draw the lights put on the converter and fan run much slower now.
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2018 28BHBE
2017 Ford F250 XLT, 6.2 gasser
2013 26BH (traded)
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