Yamaha AGI Harness - 6YH-82521-00-00. Secure and Efficient Power Connection with the Yamaha AGI Harness. The Yamaha AGI Harness - 6YH-82521-00-00 is an essential component designed to ensure reliable and efficient power distribution for your Yamaha engine. Built with precision and durability, this harness is ideal for connecting various electrical components, ensuring smooth operation and peak performance for your outboard motor or boat engine system. This quality harness supports seamless integ