CDI Electronics 423-7731 Johnson Evinrude ESA Adapter Harness, Single 5-Wire to 4 & 2 Pin Connector, OMC

The CDI Electronics 423-7731 is an OMC ESA Adapter Harness built for Johnson Evinrude outboards that use the OMC ESA electronic ignition system. It adapts a single 5-wire connection into a 4-pin and 2-pin connector configuration, letting the ESA-equipped engine wiring interface correctly with the connectors it needs to mate to. The harness uses a coaxial cable design with a male-to-female connector gender arrangement, rated for 12 volt DC marine electrical systems, and is built for both indoor and outdoor use in the marine environment.

CDI Electronics manufactures ignition and electronic components specifically for the marine industry, engineering this harness as a direct-fit replacement so boat owners and marine technicians can restore the OMC ESA wiring connection without splicing or fabricating a custom adapter. It is intended for outboard electronic components and connection management on the powersports/marine engine electrical system.

Specifications

• Brand: CDI Electronics
• Manufacturer Part Number: 423-7731
• Product Type: OMC ESA Adapter Harness
• Connector Configuration: Single 5 Wire to 4 & 2 Pin Connector
• Connector Gender: Male-to-Female
• Cable Type: Coaxial
• Maximum Voltage: 12 Volts (DC)
• Indoor Outdoor Usage: Indoor, Outdoor
• Compatible Devices: Outboard Marine Engine Electronic Components
• UPC: 736983854728
• Weight: 0.3 pounds

Fitment

Designed for Johnson Evinrude outboards equipped with the OMC ESA electronic ignition system, adapting the single 5-wire harness to the 4-pin and 2-pin connectors those engines require.

Replaces (OEM)

• 423-7731
• 987700
• 987731

Frequently Asked Questions

What does the CDI 423-7731 harness do? The CDI Electronics 423-7731 is an OMC ESA Adapter Harness that adapts a single 5-wire connection to a 4-pin and 2-pin connector configuration, allowing an ESA-equipped Johnson Evinrude outboard to connect correctly to its wiring.

Is the 423-7731 harness compatible with Johnson and Evinrude outboards? Yes, the 423-7731 is designed for Johnson Evinrude outboards that use the OMC ESA electronic ignition system.

What OEM part numbers does the 423-7731 replace? The 423-7731 replaces OMC part numbers 987700 and 987731.

What is the connector configuration on this adapter harness? It converts a single 5-wire connection into a 4-pin and 2-pin connector configuration, matching the connectors used on OMC ESA-equipped engine wiring.

Is this an OEM part or an aftermarket replacement? The CDI 423-7731 is an aftermarket harness manufactured by CDI Electronics as a replacement for the original OMC 987700 and 987731 harnesses.

What voltage is the 423-7731 harness rated for? The harness is rated for a maximum of 12 Volts (DC), matching standard marine outboard electrical systems.

Can the 423-7731 harness be used outdoors? Yes, the CDI 423-7731 is rated for both indoor and outdoor use, making it suitable for installation in the outboard engine compartment.

How much does the CDI 423-7731 harness weigh? The CDI Electronics 423-7731 ESA Adapter Harness weighs 0.3 pounds.

What type of cable does the 423-7731 use? It uses a coaxial cable design with a male-to-female connector gender arrangement.

Does the 423-7731 harness work with other outboard electronic components? The CDI 423-7731 is built for outboard marine engine electronic components generally, specifically to manage the ESA connector interface on OMC-equipped engines.