Mercury - DTS AGI Harness (With SC Gauges) SmartCraft Gauge Link 892486K07. OverviewThis DTS AGI harness is built for setups already running SmartCraft gauges. It uses the 3-pin gauge link to pull clean data for tach, trim, fuel level, block temp, and oil pressure/level straight from the PCM. Out on the water, it keeps those readings steady and helps cut out the weird flicker or random dropouts that happen with old harnesses. It also has transient-voltage protection onboard to keep the PCM safe