I have been unhappy with the solar system in my 5th wheel since I purchased the 5th wheel used. Whoever installed the Solar system did a crummy poor job in my opinion. The only thing done right was the Solar panels, Everything else was wrong. First off they ran the wires from the solar panels down the vent for the refrigerator. That was OK, except they installed the Solar Controller there and hooked it to the tiny 12 volt wires to the fridge. The solar controller should be located in the battery compartment close to the batteries for Temperature and voltage control.
as you can see it is a mess. The push pull switch on the left was to cut off the output of the solar controller to prevent feed back when the system disconnect switch was off. very poor way to do things. Having to get into the refrigerator compartment to turn off the controller when the disconnect switch was thrown.
I removed the solar controller and the switch, and moved the solar controller to the front of the 5th wheel next to the batteries in the Battery compartment.
I spliced onto the wires from the solar panels and ran new wires by drilling a hole in the floor where the fridge sat over the furnace compartment and from there through the water compartment, and into the storage compartment.
wires for solar panels run along frame in big storage compartment. Drilled hole in wall to front battery compartment where I terminated the 2 number 10 gauge AWG wires from the solar panels and hooked them to the solar controller. I discovered that they had mounted the Inverter in this compartment making it hard to get to. you would have to unload everything and then crawl into the compartment to get to it after removing a panel. it has a fuse and a GFI that would be a pain to get to if you ever blew the fuse or tripped the GFI so I moved it to the battery compartment too.
This is the battery compartment before making modifications to it.
The first thing I had to do after installing the back board was to move the batteries to the left 10 inches so I could get into the wires and wiring looms on the right hand side where they came through the front lower right corner. The white you see is foam that I used to fill a 3 inch hole that several of the wires came through,above is the 2 fuse blocks with red covers. They were fastened to the metal floor next to a grounding lug and jammed in the corner. Very poor way to do it. I moved them up on the backboard that I installed.
This is the new modified Battery compartment. I installed a back board to mount stuff on 16 inches by five feet long. solar controller is on the far right. To the left of it is the 1500 watt inverter. to the left of the inverter is 30 amp fuse block to protect the solar panels, and the controller. To the left and down is a meter for battery condition and alarm. below the Big red switch is the shunt for the meter.The Big Red Switch above is to cut off power from the batteries to the system. The factory disconnect switch does not remove all of the power from the batteries. If the 5th wheel is in storage the batteries would run down in about a week or two, because the factory disconnect switch does not remove power from the slides, outside lights, and leveling system. This is by design from the factory. If in storage with the factory disconnect switch in the off position, the batteries will still be charged and maintained by the solar system. If I want to unhook the batteries from the system to work on it or other reasons then I can use the big red switch to do so.
All done and all set up the way I want it and the way it should have been done to begin with,