Another way to connect your leds when you want to control the brightness. Easy connection (pos neg) connection on battery and (pos neg) on the LED's and voila. This PMW is "on" and "off" and variable on rotation. Mount it in your console and you are in control of your LED's. For use 12 volt DC LED with 6 AMP or LESS voltage 12 volts (9-20v DC) with 98% efficiency.