Mercury - Ignition Harness Adapter Non-DTS 8-Pin to 14-Pin 84-896542T01. The Mercury Non-DTS Ignition Harness Adapter is designed for mechanical control setups where an older eight-pin boat-side ignition harness must connect to a newer fourteen-pin engine ignition port. It is commonly used during repowers or engine upgrades when the existing boat wiring remains in place. This adapter provides a clean, factory-style conversion without requiring replacement of the full ignition harness.. Maintaini