Mercury - Tiller Power Harness (3.0 m) Rigging Accessory 84-8M0210366. OverviewThis 3-meter tiller power harness gives you plenty of length to run from the tiller cowl to the power center on 20-35E electric outboards. It's meant for layouts where the shorter harnesses feel too tight or the wiring has to travel a longer path through rig tubes or bulkheads. With the added reach, you can route the cable in a smooth, natural line instead of forcing sharp bends or awkward angles.. Key Features • 3.0