This Fall I finally decided to enclose the cab of my 2016. Found this thread while researching heaters, figured why not give it a shot. Price and keeping the heater dry was my main concerns. Here is what I ended up with.
Summit Racing heater mounted under the hood. Thanks OleRed for that Idea. Had to cut some plastic to get it where I wanted.
View attachment 249914
All the typical mods are still mounted under the hood: Busman PDM, True Am isolater, Stinger relay, Oddysey battery. Cut the out the plastic where the 2nd battery was installed and made a steel tray to lower the battery so the heater would fit on top of it.
View attachment 249916
Mounted 2 vents on the lower part of the dash. They will turn 360, so you can aim the flow at any part of your body.
View attachment 249917
The hardest part was trying to get real defrosters. Ended up taking the dash out and boxing in the space Above the upper dash pocket and drive modes selector. Air is feed from the passenger side of the chamber. While I had the dash apart, I added some thin rubber sheeting and foam to completely seal up the dash. Sorry, the plastic welder was frustrating and I didn't take and pictures while I had the dash apart.
View attachment 249918
Kit came with a 3 speed switch, which I trimmed a little to fit in my switch panel. Heater draws some power on the highest setting, but the voltage will hold there all day. Never really need to use High though. We have been out in single digit temps with the heat on low and have to crack open the windshield vents to maintain a comfortable temp in the cab.
View attachment 249920View attachment 249921
All the duct work is short and contained within the sealed dash. I lose a bit of heat between the oil cooler and heater core, but still get 145 degree air at the vents when the engine is idling at around 200 degrees.
View attachment 249922
Here is why I wanted a heater mounted up high. This part of the trail was a bout 2" deep until the end.
View attachment 249924
Same area, different weekend.