Added length for trim tab installations that exceed wiring harness included in the kit. Sometimes due to routing or the distance of the helm in from the hydraulic power unit the supplied wiring harness is just too short. Bennett offers this 22' harness as a solution to connect the control switch to the hydraulic power unit. Key Features 22' wiring harness to connect Bennett trim tab control switches to hydraulic power unit Provides extra length for routing or to accommodate for greater distances between the helm and hydraulic pump