you dont need 3 wires connecting between two switches to make a 3 way switch work. It's actually very simple.Connect two poles of two seperate dpdt swithes in series. /connect the other two poles together in series also. What you have left is two switch commons . Connect one of these commons to the load(light), and the other to line#1(115vac hot).Try drawing out what I said here to make sense of it.Can you help me with a four way switch?