Have used these two LEDs for my ramps sliding door wardrobe length of 2,15m. Placed inside (preferably maintaining the ramps clips (provided) and fixed with small coves) Done controlling the ignition with remote switch, the advantage being less cable and no automatic switching. nevertheless provide small 1x1cm trunking for the passage of cables for hard to reach ... Pretty ramps, discrete and efficient lighting .. less consumption 14watts 24volts DC