Mercury - Resistor Pack DTS Shadow Mode Shadow Mode Interface 898091T01. OverviewThis resistor pack is used in DTS Shadow Mode setups to keep the system communicating the way it should, especially on older triple-engine rigs. It smooths out the signal path between the helm and the engines so the Shadow Mode logic doesn't get confused or jumpy. This version includes the #93 resistor used with Helm 1 and Starboard 2 on compatible harnesses. It's a small piece, but it helps older DTS Shadow Mode bo