Hi, I have a question about a dusk tilll dawn photo cell, I have this five outdoor lights and the first light have a photo cell building to it and I am thinking of putting ia a photo cell after the first light, the photo cell can handled up to 2000 watt, will this work for the remainning four lights?

I would use 1 photocell for all, the one in the first may handle all lights(this way all light at once). Read the wattage on the phohotocell, add up the total wattage of bulbs, just don't go over. I actually like a buffer, if it close to maximum wattage, I will use a larger photocell/dimmer, whatever, its not running at full blast and should last longer.