Mercury - Upper Dual Helm Harness Triple Engine Next Gen DTS Helm Harness 84-8M0157218. OverviewThis harness handles the upper helm on a triple-engine, dual-station DTS setup. It gives the top helm its own clean path into the system, instead of sharing cramped space with the lower station. When it's paired with the lower harness and the helm-to-helm extensions, both helms stay in sync and the controls feel steady. It's a simple piece that helps a busy multi-engine layout stay organized instead o