Mercury - Ignition Harness Adapter Non-DTS 14-Pin Female to 8-Pin Male 84-896539T08. The Mercury Non-DTS Ignition Harness Adapter is designed for mechanical control setups where a fourteen-pin boat-side harness must connect to an eight-pin engine ignition port. It is most commonly used during repowers or engine upgrades when the existing boat wiring remains in place but the engine connector style differs. This adapter allows the two systems to interface correctly without modifying the main harne