2012 Columbia Low Voltage disconnect issues

My LVD alarm will come one while I'm driving, sometimes as soon as I shut the truck off, sometimes works great. I have 14.0 at my inverter controller and the alarm will be going, i will lose my interior lights and stuff, then it just comes back on by itself. I pulled the dash, it's different than my old classic it has a plug with small wires going off under the dash and the 2 larger wires in and out. Right now I have 12.4 in and nothing out. Its suppose to cut off at 12.3 is it not?

 

Update. So it seems to have died altogether. In with the truck running it has 14.07 in, but no out put. The plug in the center of it has 2 yellow wires that disappear under the dash, and a 3rd that is just a jumper from the out put stud back into the plug, also yellow. I have continuity between the out put and the iso on the fuse box, and continuity between the iso at the fuse box and ground.
The 2 yellow that come from the plug and go under the dash have no power, 1 has continuity to ground, one does not. The far left one also goes to ground thru the output .

 

Are the 2 wires from the plug for the alarm buzzer? Should I leave the plug unplugged? Why do I have continuity from the out put post to ground? I'd love to have a schematic for this.

 

The wire marked vsns is not live?
Obviously a voltage sense wire? Where does it get its voltage? Alternator? Fuse box?
It's dead so it could be all the problem?

 

My worry is that there is a short there, that is why it's dead and it will short and cause a fire. Been down that road already with a Pete I had. Wasn't cheap.