Mercury - Single Engine LCM Zero Effort Kit Legacy Control Module 98-8M0171388. OverviewThis kit gives older Zero Effort Controls a straightforward way to work with the newer Digital Throttle and Shift harnesses. It keeps the boat's original control feel while letting the system run on modern wiring, which makes the whole setup a lot less temperamental. The module and harness keep things tidy behind the dash, cutting down on the usual clutter that builds up over the years. It's a simple bridge b