The handy Load Mate helps you get to the perfect depth when loading and unloading your boat. No more going back and forth! Just back your trailer up to the boat ramp, and an electronic float switch changes the red LED indicator lights to green when your trailer is at the proper depth for safely loading or launching. The super-bright LED light is also a great guide indicator, giving you increased visibility when trailering. Easy to install, completely waterproof, and impact-resistant. Low amp output for longer battery life. Retrofit your existing guide-ons or purchase the complete guide-on kit. Indicator Kit comes with driver and passenger side light assemblies, float switch assembly, float switch mounting plates, two 3-1/2" x 8" Load Mate decals, and all wiring and mounting hardware.