2-Pin Waterproof Connector – Sumitomo 7283-5967-30, Methanol/Flex-Fuel Conversion Plug for Automotive Wiring

Sumitomo part number 7283-5967-30 is a 2-pin waterproof automotive connector used in methanol conversion, flex-fuel, and fuel system sensor wiring harness applications. The 7283-XXXX-XX part number format is characteristic of Sumitomo’s waterproof connector series. The 2-pin configuration is standard for simple power/ground or signal/ground sensor connections. This connector is commonly used in flex-fuel and methanol conversion kits as a plug-and-play connector for fuel composition sensors, injector wiring modifications, and fuel system sensor additions. Available in 5-set packs for conversion kit builders and workshops.

Key Specifications

• Part Number: 7283-5967-30
• Manufacturer: Sumitomo Electric Industries
• Pin Count: 2 pins
• IP Rating: IP67
• Housing Material: PA66 nylon, chemical-resistant
• Operating Temperature: -40°C to +125°C
• Application: Methanol/flex-fuel conversion wiring, fuel system sensor connections
• Quantity: 5 sets

Methanol/Flex-Fuel Conversion Applications

This connector is used in flex-fuel and methanol conversion kits for:

• Flex-fuel sensor connections: Connecting an ethanol/methanol content sensor to the vehicle’s fuel line and ECU wiring
• Injector wiring modifications: Plug-and-play injector wiring connections for methanol injection systems
• Fuel pump wiring: Additional fuel pump connections for dual-fuel or high-flow fuel system upgrades
• Sensor additions: Adding fuel temperature or pressure sensors to the fuel system wiring

Frequently Asked Questions

Why is IP67 sealing important for fuel system connectors?

Fuel system connectors are exposed to fuel vapors, fuel splashes, and engine bay moisture. IP67 sealing prevents fuel vapor and moisture from entering the connector and causing terminal corrosion. Corroded terminals in fuel system connectors cause intermittent fuel sensor faults and injector misfires. Always use IP67-rated connectors for fuel system wiring — never use unsealed connectors in the engine bay or near fuel system components.

What contacts are compatible with 7283-5967-30?

Sumitomo 7283-series connectors use Sumitomo-specific contacts. Cross-reference the connector part number in the Sumitomo catalog to identify compatible contact part numbers. The contact size depends on the specific connector series — verify before ordering replacement contacts.

Why buy 5 sets?

5-set packs are for conversion kit builders and workshops that install multiple flex-fuel or methanol conversion kits. Having bulk stock eliminates reorder delays during installation jobs. The 7283-5967-30 connector is used across multiple conversion kit applications — keeping it in stock simplifies kit assembly.

Typical Applications

• Flex-fuel conversions: Ethanol/methanol content sensor wiring connections
• Methanol injection: Methanol injector and pump wiring connections
• Fuel system upgrades: Additional sensor and pump wiring connections
• Automotive workshops: Workshop stock for fuel system wiring connector repairs

Package Contents

5 sets — Sumitomo 7283-5967-30 2-pin waterproof connector sets. Each set includes male plug and female receptacle housing. Contacts and wire seals ordered separately if not included.