Holley EFI 558-448 J1A/J1B ECU Connector Kit with Pre-Terminated Wires

The Holley EFI 558-448 J1A/J1B ECU Connector Kit provides everything needed to properly connect your Holley EFI engine control unit. This comprehensive wiring solution features pre-terminated Tyco Superseal connectors designed specifically for J1A and J1B ECU interfaces, eliminating the need for crimping and reducing installation time.

Kit Includes:

• Two 30-cavity plugs for complete ECU connectivity
• 60 pre-terminated wires sized for 20-22 gauge applications
• 20 pre-terminated wires sized for 16-18 gauge applications for higher current circuits
• Pre-terminated J1A and J1B Tyco Superseal connectors for reliable, weatherproof connections

This plug-and-play connector kit ensures proper wire gauge selection for different circuit requirements, with heavier 16-18 gauge wires handling higher amperage loads and lighter 20-22 gauge wires for signal and low-current circuits. The Tyco Superseal connector system provides a secure, moisture-resistant connection that stands up to harsh engine bay environments. Ideal for custom EFI installations, engine swaps, or replacing damaged wiring harnesses on Holley EFI systems.