Mercury - Analog Gauge Harness DTS Engine Link 84-8M0095826. OverviewThis 20-foot analog gauge harness plugs straight into the engine's 4-pin lead and sends clean signals for trim, coolant temp, oil pressure, and tach. The extra length makes it a good fit for larger boats or consoles mounted farther forward. On the water, it helps the gauges stay steady and cuts out the flicker or dropouts you get with old or stretched wiring. Simple hookup, long reach, and built specifically for DTS engines.. K