Put broken Christmas tree lights and outdoor Christmas lights in your black cart as garbage.
You can also take them to a City landfill for metal recycling. Christmas lights are free to bring in but landfill charges will apply if there are garbage items in your load.
You can also take to a private metal recycler. Some private companies may buy scrap metal, charge a fee or accept items for free. Find options at The Yellow Pages under Metal Recycling or contact these local metal recyclers: