32145-ZVT-900 Smart Key Harness - Overview. The 32145-ZVT-900 Smart Key Harness is an essential component in Honda marine engine systems, specifically designed to support the smart key ignition system. This harness acts as the critical wiring conduit connecting the smart key module with related components to enable keyless ignition, enhancing security and ease of use. Manufactured to meet strict OEM standards, it ensures seamless integration with existing parts, maintaining optimal performance a