Mercury – Extension Harness | 2-Pin Excitation and Ground | 84-8M0176940Mercury Extension Harness 2 Pin Excitation and Ground 84 8M0176940 OverviewThis fifteen foot harness is made for situations where the rig center and isolator sit farther apart than usual. Instead of stretching wires or forcing tight turns, you get enough length to route everything in a calm, natural path. It keeps the wiring bay cleaner and easier to work in, especially on larger boats with longer runs. Its a simple piece, but it takes a lot of stress