Here ya go
@WashingtonTaco.
I’ve had this onboard water tank for a number of years. Originally it was my brother-in-laws, bouncing around in his Tundra, than I got it when he went full trailer. I modified it to my taste and to work in my Tundra, Fafhrd. It had a compartment for its own battery but I wouldn’t have room for that in the Tacoma.
The tank itself is a 20 gal potable water tank, bought from an RV supplier I don’t remember. It measures 16” high, 8” deep and 40” long. Water fill on top to the left, with the right hand side having a vent on top and a threaded bung on bottom. I reused as much of the old enclosure’s carcass as possible cause I’m frugal.
Since I have to deal with the depth of the cap’s tool boxes the water pump had to moved from the side to the top. I built a small enclosure to house the 2.5 GPM Shurflo 12v pump and centered it on top. The right hand side of the main box has 2” of empty space to allow for fitting and plumbing. Two nylon water supply hoses were splice together to feed the pump and another serves as the conduit from the outflow to the brass spigot.
Power to the pump comes from an ATV pump sprayer lead with built in switch. This has the same 18 gauge waiting as that coming out of the pump. The pump has a built in pressure switch so it shuts itself off and can run dry with no damage.
The tank sits to the rear of the bed and turnbuckles attached to the box and the factory tie downs keep it in place. The enclosure still sits below the height of the middle headrest so there no loss of rear view. The slit in the front of the enclosure is to have a sight bubble on the water level in the tank. Though it’s a 20 gal I normally fill it a gallon or so shy.
I worked the power lead down the rail cleats back to the onboard 12v socket I have installed in the passenger side storage bin.
Primary usage is for camp kitchen cleanup and for supplying water to our Triton on demand shower/water heater.
20 gals will usually last the 2 of us around 5 days. I also use it for washing critters down after being skinned when we’re hunting out of the way somewhere.
