Water fill up onboard tank
I just purchased a 2015 Keystone Laredo. I have had several units in the past and they all had a water fill up where you just stuck a hose in and filled up. This unit has a switch between onboard and ...
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SIMPLE FRESH WATER TRANSFER
Regardless of whether a trailer has a conventional gravity fill for the fresh water holding tank or has been saddled with some form of over complicated valving system to direct potable water into the trailer the simpler solution is to ignore it all. Instead, invest in a 12 vdc potable water pump, mount it on the trailer somewhere you deem convenient, and plumb the pump's output directly to the tank. In my case Coachmen had connected the fresh water pump's intake hose to a port halfway up the side of the tank so the end result was the pump could never fully drain the tank. To solve this I installed a T in the drain port which is on the bottom of the tank and connected the pump's intake hose to the T - now the pump will empty the tank fully. With this done that left the middle tank port unused so I then plumbed the output of my fresh water transfer pump located on the trailer tongue to this middle port. To transfer potable water from Aquatainers sitting in the back of my truck I simply stick the transfer pump's intake draw tube into a full 'Tainer sitting on the truck tailgate and let 'er rip ... fresh water holding tank fills automatically. :B If the trailer's FW tank doesn't have a port on the sidewall then use a T on the drain port and connect to that instead. Naturally this mod is easier for those owning a trailer with an open underbelly but for those that are enclosed it's a simple matter of creating a 3-sided hatch where you want to access the fresh water holding tank's ports. More pics are in my gallery. :)
![](http://i.imgur.com/2tRo9E4l.jpg"width=450")
![](http://i.imgur.com/NjeAJifl.jpg"width=450")
Regardless of whether a trailer has a conventional gravity fill for the fresh water holding tank or has been saddled with some form of over complicated valving system to direct potable water into the trailer the simpler solution is to ignore it all. Instead, invest in a 12 vdc potable water pump, mount it on the trailer somewhere you deem convenient, and plumb the pump's output directly to the tank. In my case Coachmen had connected the fresh water pump's intake hose to a port halfway up the side of the tank so the end result was the pump could never fully drain the tank. To solve this I installed a T in the drain port which is on the bottom of the tank and connected the pump's intake hose to the T - now the pump will empty the tank fully. With this done that left the middle tank port unused so I then plumbed the output of my fresh water transfer pump located on the trailer tongue to this middle port. To transfer potable water from Aquatainers sitting in the back of my truck I simply stick the transfer pump's intake draw tube into a full 'Tainer sitting on the truck tailgate and let 'er rip ... fresh water holding tank fills automatically. :B If the trailer's FW tank doesn't have a port on the sidewall then use a T on the drain port and connect to that instead. Naturally this mod is easier for those owning a trailer with an open underbelly but for those that are enclosed it's a simple matter of creating a 3-sided hatch where you want to access the fresh water holding tank's ports. More pics are in my gallery. :)
