34750-ZZ5-M02 El Control Unit - Overview. The 34750-ZZ5-M02 El Control Unit is a critical component in Honda marine engine systems. This electronic control unit manages and regulates various electronic functions that are vital for the optimal operation of marine equipment. Designed to seamlessly integrate with Honda marine systems, it ensures reliable control and peak performance, maintaining smooth and efficient operation across compatible equipment.. Key Features. Genuine OEM Honda El Control