Southwire 55843823 18 Awg Automotive Primary Wire 100 Ft

Product Description

The SOUTHWIRE 55843823 is an 18 AWG automotive primary wire rated for use in surface vehicle electrical systems. The wire runs 100 feet per spool and features a yellow PVC outer insulation, making it easy to identify in multi-wire harness and accessory installations. The 16/30 strand construction provides flexibility for routing through tight spaces and around chassis components. Rated at 60 volts maximum with a temperature tolerance up to 85 degrees F, this wire meets SAE standards for automotive electrical work. It is the right choice for technicians wiring accessories, sensors, lighting circuits, and other low-voltage DC applications in cars, trucks, and trailers.

This wire is suited for surface vehicle electrical systems including passenger cars, light trucks, trailers, and off-road equipment. Common applications include auxiliary lighting, audio system wiring, sensor leads, switch feeds, and other 12-volt or 24-volt DC accessory circuits. The yellow color coding supports easy circuit identification during installation and future service. The 100-foot spool length covers most single-run accessory installs without splicing and provides enough wire for multi-run light bar or relay harness builds.

Key Features

• 18 AWG with 16/30 stranded construction for flexibility and vibration resistance
• Yellow PVC insulation for easy circuit identification
• 100-foot spool length suitable for full accessory harness runs
• 60-volt rating appropriate for 12-volt and 24-volt DC vehicle systems
• Rated to 85 degrees F maximum operating temperature
• Meets SAE standards for automotive primary wire

Compatibility

Designed as an SAE-compliant automotive primary wire for use in surface vehicle electrical systems including cars, light trucks, trailers, and similar 12-volt or 24-volt DC platform applications.

Installation Notes

Install using standard automotive wiring practices. Disconnect the vehicle battery before beginning any wiring work to prevent shorts or accidental circuit activation. Use appropriate automotive-grade terminals, crimp connectors, and loom or conduit where wire is exposed to abrasion, heat sources, or moving components. Follow applicable SAE and vehicle manufacturer guidelines for wire gauge selection relative to circuit ampacity and run length.