18 AWG Primary Wire - GPT Stranded Copper Automotive Wire - 25 ft to 500 ft - Made in USA

This 18 AWG GPT primary wire is engineered for low-voltage automotive, trailer, and industrial circuits. Manufactured with 100% stranded annealed copper and insulated with general-purpose thermoplastic (GPT), this wire delivers dependable conductivity and flexibility, even in harsh conditions.

Specifications & Features

• Gauge: 18 AWG
• Stranding: 16 x 0.010"
• Outside Diameter: 0.091"
• Conductor Material: 100% stranded annealed copper
• Insulation Type: GPT – General Purpose Thermoplastic
• Voltage Rating: For circuits up to 60V
• Temperature Rating: -40°C to 80°C (-40°F to 176°F)
• Standards Met: SAE J1128, RoHS compliant
• Available Colors: Black, Blue, Brown, Green, Grey, Orange, Pink, Purple, Red, White, Yellow, Dark Blue, Dark Green, Tan
• Highly flexible and oil-resistant insulation for rugged automotive environments
• Recommended for vehicle harnesses, lighting systems, and low-voltage accessory circuits
• Made in USA

Application Notes

This wire is suitable for automotive dashboards, trailers, tractors, and 12V or 24V accessory power systems. The variety of color options enhances wire tracing, organized installations, and long-term maintenance for both OEM and aftermarket projects.