The one I got doesn't have a photocontrol receptacle. However the capacitors are under the terminal block, just like this one, and it has the same bolts, instead of threaded rods.
Yeah I noticed that. I looked at your picture of your Silverliner open and could see where the capacitors used to be. Did you keep the original ballast? Or ever use it?
No, I never used it. It was 400 watts and to keep the electric bill from skyrocketing, I ordered that 100 watt Mercury Vapor ballast and took out the original ballast.