38552-ZY0-120AH Harness Kit (8D-20D) - Overview. The 38552-ZY0-120AH Harness Kit (8D-20D) is an essential electrical rigging component designed specifically for Honda marine engine systems. This OEM harness kit supports the ignition and electrical system for engines in the 8D to 20D range. It ensures seamless integration with existing parts, maintaining optimal performance and durability, keeping your marine engine operating reliably with precise electrical connectivity.. Key Features. Genuine O