Mercury - Diesel Helm Panel Board Axius Gen II DTS Control System 98-8M3800000. This Mercury Diesel Helm Panel Board is designed for Axius Gen II DTS applications where integrated control and stable digital communication are critical. It serves as the primary helm-side assembly, combining control modules, wiring harnesses, and mounting hardware into one coordinated OEM system built specifically for diesel configurations.. The board ships complete with required components, eliminating the need to