I could not find a convenient/easy way or place for a typical 110V switch for the garbage disposal in a kitchen island....... But I remembered and old wood boat I had and the switches and instruments for these boats are designed for 3/4 inch thick dashboards..... hence a Boat Horn push pull switch in the cabinentry beneath the granite counter top on the island. On the inside I still put the switch and wire connections inside an electrical box in case the 12V intended switch ever malfunctions. This was a real lifesaver for me. Otherwise I was going to have to drill a hole in granite and install uber expensive pushbutton switch up on top of the counter.