Mercury - Boat Harness Adapter 6-Pin Engine-to-Boat Connector 84-898285T01. Overview. Some newer engines ship with a female 6-pin connector, but plenty of existing boats still use a female 6-pin harness. The Mercury 84-898285T01 Boat Harness Adapter solves that mismatch. It provides a simple way to bridge the two ends without modifying the wiring, letting the engine and boat harness connect cleanly and communicate the way they should.. Key Features. 6-Pin Gender Adapter - Joins a female engine c