Mercury - Ignition Harness Non-DTS 14-Pin Engine Ignition and Gauge Wiring 84-896537T08. The Mercury Non-DTS Ignition Harness is designed for mechanical control setups that rely on traditional ignition and gauge wiring without digital throttle and shift systems. Its shorter length makes it well suited for compact helm layouts where the engine and control station are positioned closer together. This harness is commonly used when replacing worn or damaged wiring while keeping the rigging layout cl