Originally Posted by erikcampbell
I have the roof mounted panel installed by escape but I recently ran into a situation where I was parked under a tree. Would it work in conjunction with the fixed panel. I know nothing about solar or electricity.
Ouch, now may be the time to learn a little about electricity.
A new solar panel, as long as it's considered to be a '12 volt system' panel can be added to the input of the controller you already have.
As long as the positive of the new panel is connected to the same place as the positive of your existing panel, and the negative of the new panel is connected to the same place as the negative of your existing panel you are good to go.
The existing panel probably doesn't output 8 amps and a new 100 watt panel is about 5 amps, so added together, about 13 amps. Your controller in the trailer is a 30 amp model, Samlex or goPower.
Connecting the two panels with a suitable connector and then running the wires is the hard part.
I have used 'Deans' connectors for over ten years. They are from the RC car hobby and are polarized and can handle 30 Amps. The weather doesn't hurt them.
Amazon.com: Leegoal 5 Pairs Li-po Battery Deans T-plug Connector Pack + Worldwide free shiping: Toys & Games
They are small, can fit thru a half inch hole. In my camper the wire comes out of my battery breather hose. On the trailer it currently comes out of the AC plug wire door.
Although wire thickness is a concern and I should be using 12 gauge at minimum, I am using plain old 14 gauge extension cord wire. And quite a bit of it, about 30 feet. There is only small decimal point losses in voltage, not an issue in my world.
As fudge brownie says, the charge controller on the back of the solar panel is the worst place you could possibly put it.
Maybe just buy a raw 100 watt panel from amazon/renogy
Amazon.com : Renogy 100 Watts 12 Volts Monocrystalline Solar Panel : Patio, Lawn & Garden
You should be able to get a RC car place to solder and heat shrink some Deans connectors to a extension cord wire for you if you buy the Deans from them it might even be free.
I would have the cable made up like an extension cord, male on one end and female on the other. Put a female end on the trailer and a male end on the solar panel. The black box on the back of the solar panel can be opened up and the wires replaced if you want.
So that just leaves the hard part of making a connection to the back of the solar controller or the wires from the existing panel.
I would help you but I'm a thousand miles away....