Hello, I have installed all the lights and now it's time to flip the switch I'm getting the source from an electrical outlet on the same wall.. I have 14/2 wire Blk, whte, ground.. how do I connect a switch in order to operate the lights. I was told to connect the white from the lights directly to the outlet prong. The black cut into two putting on the switch. This will open and close the lights... can you help please.. I want to be sure