CDI Electronics 18-99401 Engine Adapter Harness for Johnson/Evinrude Outboards

The CDI Electronics 18-99401 (replaces OEM 423-6344, 0176344) is an engine adapter harness designed to connect 1976-1995 Johnson and Evinrude outboard motors to newer Deutsch-style control systems. This adapter harness bridges the compatibility gap between older engine wiring and modern modular control harnesses, eliminating the need for extensive wire splicing.

Key Features:

• Adapts 1976-1995 Johnson/Evinrude engines to 1996 and newer control systems
• 18-inch length provides engine compartment installation
• Features engine-end connector only (boat side harness requires separate purchase)
• Compatible with red plug boat side harness (1973-1995 motors)
• Includes main engine connector and blue trim plug for power trim and tilt functions
• Direct replacement for OEM part numbers 176344 and 423-6344

This adapter harness connects to the motor's main plug and trim plug, while the controller end attaches to three separate plugs on the new boat side harness (main control, alarm, and trim). Installation typically requires replacement of the existing boat side harness with OEM parts 176333 (5 ft), 176334 (10 ft), or 176335 (20 ft) depending on your application.