Eliminating the need for rewiring I/O’s and E-Plex bus to the 805OPM; The HOI adapter creates Plug’n’Play compatibility for 366HMM, 413DWM, and 407QHM Replacement modules. This adapter is highly recommended for any aforementioned replacements. Please note that this adaptor will not work on “Cruisers Yachts” due to the Deutsch connectors.