Those are electrical wires, just hanging out! Here in Nicaragua, there are not hot water faucets, everything is cold. Usually there is only one faucet, not two. So in order for there to be hot water from the shower, you have to turn on the widow maker - the water runs through a heating coil of some sort and then you get hot water. But, we've been warned not to touch the the shower head (Widow Maker) or we'll get an electrical shock! How crazy is that!! Needless to say, we have not been touching it!
And because people have been asking - here's a picture of David cutting up a 80 cent pineapple and me loving Coca-Cola Light.