Mercury - Analog Gauge Harness DTS Engine Link 84-8M0095716. OverviewThis 15-foot analog gauge harness plugs into the engine's 4-pin lead and gives you clean signals for trim, coolant temp, oil pressure, and tach. The extra length makes it handy for consoles that sit farther forward or rigging paths that need more reach. On the water, it helps the gauges stay steady instead of flickering or dropping out from tired wiring. It's a simple plug-in harness built for modern DTS engines.. Key Features