Anyone used these before and could tell me how they work. OR even if they have used the origianls u need snips with. I also know you are supposed to use a relay. Do you really need it? I want to use it for higher wattage bulbs. Let me know if you have any useful info how these work and get wired? Can you just plug in the plug and play ones to the exhisting hanress and be all set? Thanks, and dont tell me about bulbs.