I would like to install a photocell on my exterior lights instead of having to rely on a timer. do I need to hook this up between the switch and first light (3 lights on the switch) or can I wire the photocell (10ft away) to the first light as the wires go on from there to the 2nd and 3rd lights.
Answer:
If the controlling switch is off, the lights won't turn on no matter where the photo cell is.