Battery Cut Off Switch At Door Keeps Dropping 12 Volt System

[Battery Cut Off Switch At Door Keeps Dropping 12 Volt System]

I would like to by-pass and remove this voltage regulator in front left compartment under drivers area and eliminate tis faulty part and energy cut off switch by front door panel I still have the energy cut off switch in the battery compartment if needed i am worried this might be fire issue etc Dont believe it would hurt anything

[Battery Cut Off Switch At Door Keeps Dropping 12 Volt System]

We have replaced the solenoid to the switch with the resister in it three times/ When looking at the control board in my hallway you can always see batteries fully charged. Now it barely gets to the good range and usually at fair or bad. Can't see why it won't go to fully charged. I think its getting low and dropping the 12 volt system. I have checked all 4 of my Trojan deep cycle house batteries They all appear to be in good shape Nov 2011 they were made.

[Battery Cut Off Switch At Door Keeps Dropping 12 Volt System]

My 12 volt system keeps dropping we get home with no lights and fridge getting warm.