Insta-Trim boat leveler's electronic tab locator shows theposition of your tabs. Two seperate lines of diode lampsaccurately indicate the position of each tab. the screen issmall, mounts on the dashboard, and is designed tomatch your rocker type controls in size and appearance.The detectors are rugged and attach easily and quickly toeach hydraulic cylinder. The attached readout line runsup to the light panel with simple plug in connections.Insta-Trim electonic tab locators can be added to yourexisting boat leveler system, upgrading your system for abetter, more accurate performance.Installation is quick, easy, and simple. Only a fewcommon tools are rquired, and the tab locators comewith easy to follow instructions.