32530-ZW7-U10 Sub-Harness Assembly - Overview. The 32530-ZW7-U10 Sub-Harness Assembly is an essential electrical wiring component within Honda marine engine systems. This sub-harness supports the power trim-tilt system (B variant), providing reliable routing of power and signal communication between engine control units and trim-tilt mechanisms, ensuring smooth operation and response. Designed to meet exact factory specifications, this harness assembly ensures seamless integration with existing