i need help with a diagram...i would like 2 have 2 LEDs in paralel with a photocell and a9 v battery powering it. thats easy to do but i would like to add a on/off/auto switch so off is always off. on always on. auto on when light off. i just dont knoiw how to get the switch in there so if someone could draw a diagram that would be greatly appreashated.