CDI ELECTRONICS OMC 20 Ft. Boat Side Engine Harness Red Plug 473-9410 OMC 20 Ft. Boat Side Engine Harness Red Plug OMC 20 Ft. Boat Side Engine Harness Red Plug Replaces boat side control harness for engines having the red OEM connection plug Replaces OMC 174969 Replaces CDI 473-9410-35