Where do you plug them in?have never had any outdoor lights due to cost (initial outlay and worry about electricity cost) but have seen some lovely led icicle lights (you know the ones you just run along the top of across the front of the house) reduced right down online and was considering getting them for next year but realised I don't know the first thing about installing them ie how to attach them or where to plug them in-surely you don't need to put the lead through the window to plug in?! If it's going to be a nightmare I'll just leave it but know the kids would love to have lights next year.thanks in advance and happy christmas.