32570-ZY1-000AH PT BF8D-20D EXT HRN - Overview. The 32570-ZY1-000AH PT BF8D-20D EXT HRN is a genuine OEM wiring harness extension designed specifically for Honda marine engine systems. This extension harness plays a crucial role in extending the main wiring harness connections, ensuring reliable electrical communication between the engine and control systems. Compatible with several Honda power tilt engines such as BF8D, BF9.9D, BFP8D, BF15D, and BF20D, it maintains seamless integration with exi