38552-ZW9-025AH Hrn/kit (8-9.9D) - Overview. The 38552-ZW9-025AH Hrn/kit (8-9.9D) is a critical harness kit designed for Honda marine engine systems specifically within the 8 to 9.9 horsepower range. This harness kit supports the electrical system by providing necessary wiring and connections, ensuring reliable communication between the engine control unit and essential electrical components. Crafted to meet factory specifications, it ensures seamless integration with existing parts, maintaining