5500/5600 3.7mm 2-Pin Automotive Wire Butt Connectors – 10 Sets

10-Set 5500/5600 Series 3.7mm Pitch 2-Pin Automotive Wire Butt Connectors

Keep your vehicle's electrical system running cleanly and securely with these 5500/5600 Series 3.7mm Pitch 2-Pin Automotive Wire Butt Connectors. Designed for car headlight wiring, these air butt socket connectors deliver a firm, riveted connection that resists vibration and moisture — perfect for OEM-style repairs and custom wiring projects alike.

Each set includes both male and female housings with pre-installed terminals, so you get everything you need for a complete, professional-grade wire join right out of the box. The 3.7mm pitch ensures a precise, snug fit that stays locked in place even under the hood's demanding conditions.

Product Highlights

• 10 Complete Sets — 10x Male Connector Housing & Insert + 10x Female Connector Housing & Insert
• 40 Terminals Included — 20x Male Terminals + 20x Female Terminals for a full wiring solution
• 3.7mm Pitch — Compatible with 5500/5600 series connector standards (Model: DJ3023-2.3-11/21)
• 2-Pin (2P) Configuration — Ideal for car headlight plugs, butt socket wiring, and general automotive electrical applications
• Riveted / Air Butt Design — Secure, vibration-resistant connection that holds firm in demanding automotive environments
• CE Certified — Meets EU Low Voltage Directive standards
• No High-Concern Chemicals — Compliant and safe for everyday automotive use

Package Contents

• 10 × Male Connector Housing and Insert
• 10 × Female Connector Housing and Insert
• 20 × Male Terminals
• 20 × Female Terminals

Specifications

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External Resource

For safe electrical wiring practices and automotive connector standards, refer to guidelines from the U.S. Consumer Product Safety Commission (CPSC).

Learn more: Electrical connector

Frequently Asked Questions

Q: What vehicles or applications are these 5500/5600 3.7mm 2-pin automotive connectors compatible with?

A: These 5500/5600 series 3.7mm pitch 2-pin connectors are widely used in automotive headlight wiring, butt socket connections, and general car electrical repair or custom wiring projects. They are compatible with any application using the DJ3023-2.3-11/21 standard connector format.

Q: How many connectors are included in each order?

A: Each order includes 10 complete sets: 10 male connector housings with inserts, 10 female connector housings with inserts, 20 male terminals, and 20 female terminals — giving you everything needed for up to 10 full wire connections.

Q: Are these automotive wire connectors certified for safety?

A: Yes. These connectors are CE certified and meet EU Low Voltage Directive (LVD) standards, making them suitable for high-voltage automotive electrical systems above 50Vac or 75Vdc.

Q: What is the pitch size and why does it matter for automotive connectors?

A: The pitch is 3.7mm, which refers to the center-to-center distance between the connector pins. Matching the correct pitch is essential for a secure, proper fit — using the wrong pitch can result in loose connections or damage to your vehicle's wiring harness.