duel solar inputs

hello

first time user long time reader. i have just finished the electric in my new camper trailer after hours of research on this site, i am very happy with the end product.

Though i have 1 problem. i wanted to put 2 solar panel inputs on either side of the CT so i wouldn't have to have a really long extension lead from my solar panel to the solar regulator. the extension lead is 10 metres 6 B&S with anderson plugs. i have positive and negative going into the regulator, with a anderson plug at the end then i have 2 positives and 2 negatives going into another anderson plug which joins to the anderson plug from the regulator(1 set of leads positive and negative from each side of the camper.) the problem is when i connect up the solar only 1 side of the camper works. all positives and negatives are going into the same plugs. i am not sure what is going or can you only have 1 input.

any help or advise would be great.