My wife and I recently purchased the Mallard IDM231. Among many things we were attracted to the solar ready receptacle. I am interested in a portable panel that generates 100-150 watts with a longer cord so I can set the panel on the roof during storage. I have found no information from Heartland regarding the connection prewired into the trailer or its connector. I am sure that Heartland researched and designed the connection based on existing and available equipment. Any recommendations as to brands. models, etc. is greatly appreciated