Add the Low Voltage Controller to your device, and adjust the setting. The lights just have the typical 1/2" KO. The first step is that you have to make sure that the already existing landscape lighting … The lower the number, the thicker the wire and the greater its capacity. Thanks for your electrical question Patrice. To calculate proper cable size and transformer wattage, add the wattage rating of all of the lights that will be connected together. Once I had a good investigative look at the situation, I determined how I would run my low voltage wire between the cabinet sections, and where and how I would get my power to feed the dimmer switch and the LED voltage driver. There were some fairly significant challenges, but for the most part, not too difficult of an installation. document.write('