I recently saw a video by YouTube user RODALCO2007, where he demonstrated some of his SOX streetlights. He said that they all have hour counters on them. I am wondering where I can procure one such hour counter, to put in my streetlight (when I buy it). I would wire it up like this:

(Power)—[photocontrol]—[hour counter]—[ballast]—(bulb)

So that it will start counting as soon as the photocontrol activates.