Mercury - Triple Engine LCM Zero Effort Kit Legacy Control Module 84-8M0169308. OverviewThis kit lets older triple-engine Zero Effort Controls work smoothly with the newer Digital Throttle and Shift harnessing. It keeps the familiar feel of the original controls while giving the system a cleaner, more predictable digital backbone. With three modules and the harness included, the rigging stays organized instead of turning into a maze behind the helm. It's a straightforward way to modernize a trip