Trailer Beacon Light Simple on/off switch allows you to turn the lights on and off. It is a simple plug and play installation. Takes less then 30 seconds to install. Works with most 7 way trailer plugs and keeps your plug out of the dirt and rain when not plugged into your truck. Creates a Christmas tree light effect at night. Keeps you safe on the dunes at night while others are riding. Lets people know that you're camping and it will be less likely that someone will ride into your camp at night. Stand out in the crowd. Weather resistant box keeps moisture out of electrical connections. Don't have to worry about it short circuiting it has a fused connection.