I am remodeling kitchen and want to prepare for under-cabinet lighting install. I initially installed outlet boxes in the ceiling so I could plug in an LED transformer and then run to lights, but now I'm thinking I'll use something else that preferably is less expensive and uses line voltage. Therefor, I don't necessarily need the outlets. I have installed a double gang box on the wall that will contain an outlet and a switch for the lighting. Trying to figure best way to stub out wire for lights. Do I just poke it through a hole in the drywall? (The walls are opened up right now.) I have 12/2 coming into the box and outlet. Do I need to stub out 12/2 or can I use something smaller? Is it okay to have a smaller gauge wire coming off the switch when it's on a 20A breaker? If I use something like LED puck lights in series, I'm sure they use light gauge wire; may 16 or 18. Should I match the light wiring gauge coming out of the box, or stub out the 12/2 and then connect to lighting under the cabinet? I don't want any sort of junction box showing.