I find it weird that you only have one switch for all the tanks most have at least 3 of them we have 3 in are 2017 HM 352RL and they are pad heater and they are 12 volt heaters so you can use them if you Boon docking. we camp in the winter but have not had to use them yet!
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Bob & Carol Washington St
2017 HC HM352RL 2018 Dodge 3500 laramie CC LB 4x4
Curt Q25 with puck system, Factory air bags
Happy Trails
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