Mercury - Global Wake Harness 15-Foot Harness 84-8M0163381. OverviewThis 15-foot Global Wake harness gives you the extra length needed to tie your wake system cleanly into the boat's rigging. It's meant for setups where the standard lead won't quite reach or the wiring path takes a couple of tight turns. Instead of stretching or forcing the harness, this one lets everything sit in a smoother line. It's a simple piece that makes wake-system installs and later service a lot easier.. Key Features •