Spent a day hanging them outside. They were advertised indoor/outdoor lights. Worked the first night and for a brief time second night, now ALL of them are out! They were plugged together with all 20 sets of like 35 Light LED strings on their own circuit. (Advertising says you may string over 100 sets together)You cannot replace the fuse on these lights as the instruction diagram suggests. Now I will have to take a few hours to remove all 20 sets to return for refund. 

UPDATE: Once I took all 20 sets down to ship back for refund (2 hours just to take them back down), it appears that some of the sets still worked when plugged in by themselves. Also it appears that some of the sets do have plugs that provide for changing the fuses. At least seller did allow me to return for refund.