Originally Posted by ARoamer
On my "Solar Ready" 5th wheel the "solar on the side" SAE plug is not connected to anything. I pulled the access panel off and there is 2' of wires just hanging off the back of the plug.
I'd guess mine is that way so a extra solar controller can be wired in. The roof panel controller is intended to be mounted inside so it's accessible and is closer to the roof panels.
Get a volt meter or test light, or follow the wires and see if it's connected. I'd guess you'll most likely need a extra controller if you want to use large panels on the side.
Solar Ready pretty much means wiring on roof is in place but not necessarily connected. This is because 'Solar Ready' lacks solar panels, Charge Controllers, and buss systems. On almost all RV's the solar on the side is connected directly to the battery because most people are using that connection to connect a solar fold out suitcase panel and most of them, if not all, have a small charge controller built into the package. The key here is to understand what you are connecting, you cant connect a solar panel directly to a battery without first going though a charge controller. I met one guy camping awhile back, he installed 4 100 panels on his roof, complaining the system was not charging. i helped him troubleshoot the system and found he wired the panels directly to the battery, he didn't use a charge controller. I penciled out a diagram showing what he needed to do and got an IM from him that all was well.. Solar is not complicated but you have to understand a little 101 how it works.