CDI 414-3369 Mercury/Mariner Wiring Harness 2/4 CylinderCDI replacement wiring harness for 2/4 cylinder Mercury outboards. CDI Electronics provides superior ignition and diagnostic solutions to the marine industry. CDI delivers superior product quality and reliability, making them a cost-effective alternative to OEM-supplied components.Fits: 1977-1981 (20 HP - 2 Cyl.) 1976-1979 (50, 80 & 85 HP - 4 Cyl.), Harness exits through the side of the lower cowling 20 HP 2 Cyl. 1977-1981; 50 HP 2 Cyl. 1977-1981; 80 HP 2 Cyl. 1977-1981; 85 HP 2 Cyl. 1977-1981; Replaces: 414-3369; 84-64997; 84-73369; 84-73369A 1; 84-73447; 84-73447A 1; 84-76295; 84-76295A 1; Click to Download CDI 414-3369 Installation Instructions