I want to hook up two lights and two switches. There are three cables. One has three black wires, the other two have one yellow wire and one black wire each. I'm assuming that one of the cables with one yellow wire and one black wire goes to one light and the other goes to the other light and the cable with three black wires is the power coming from the breaker box. The lights were already installed but they both ran to one switch and I want them to have their own individual switches. Where do I go from this point?