HELP-IVE A SWITCH TO WIRE UP FOR GARAGE LIGHTS,THERE ARE 3 WIRES(BASIC ON/OFF-1 SWITCH 1 LIGHT)...COPPER(EARTH)TAKE IT THIS WOULD CONNECT TO PLASTIC MOUNTING BOX EARTH?..RED WIRE AND BLACK WIRE...THE TERMINALS ARE L1 AND COMMON..(ALSO A SEPERATELY MOUNTED BLOCK MARKED N)...THE MOUNTING BOX ALSO...