I added this to the front of my TT.
As part of the install, I rewired the poorly wired factory setup that used wire nuts. Really, unsealed wirenuts???
I found the connections were rusty and replaced that wire with 10ga silicone insulted wire I got from a local car stereo installer. I also added a fuse block to separate the circuits that were all tied together which should help isolate any future issues that may pop up.
The box seals well enough to keep water out, but not so tight that the battery gasses cannot vent.
I fabricated a terminal block to make the connections to the battery.
Mike & Theresa, Madison, WI
2012 Jayco White Hawk 26SRK
2012 Ford F-150 EcoBoost FX4