An unknown driver (ok, my wife) ran over our outdoor light, and now it doesn't turn on. I've never messed with landscape lighting so I'm trying to figure out how this works. 1) I presume these PVC pipes are one set of wires coming in for power, the other going out in series to the next lamp over? 2) Are these PVC pipes standard? Everything I can find at Home Depot uses a stake. Do I need to dig these pipes out to switch to a "normal" replacement light? 3) How can I tell whether this is 12v or 120v lighting? It's powering a CFL bulb, and it has white, black, and a green ground wire, if that helps. 4) I took the wire caps off, and tried measuring voltage between white and black with the power on. Nothing. All the lights around me (other than this one) were on. What gives? Any guidance appreciated if you've seen something like this before. This is a house, built around year 2000.

The lawn is thin pretty much everywhere, but when you look closely many of the grass shoots are laid over and completely brown. There are not patches or completely dead portions. Using a garden rake, the shoots comb out in big rolls of dead grass, leaving a thin stand of live grass. Some places the dead grass might be 60%+ of what comprises the lawn. I have not let it dry out nor over fertilized. This is the condition of the lawn every year. I have had lawn cleanups/de-thatching performed regularly. Unless you look at it from directly above, you don't realize how thin it is and how much dead grass is in it. Is this the usual pH issue or something else? Can you tell without doing a soil test. Is it more likely to be one problem than another? This is temperate Minnesota and the grass variety is whatever the contractor put down, although I have overseeded with name brand northern blends from time to time.