Install Bay US18500R 18 AWG GPT All Copper Primary Wire Red 500 Ft Spool

Install Bay US18500R is an 18-gauge US GPT (General Purpose Thermoplastic) all-copper automotive primary wire, supplied as a 500-foot coil on a metal spool. Designed for low-voltage 12-volt automotive and mobile electronics installations, this wire delivers reliable conductivity and long-term durability for a wide range of wiring applications.

Key Features:

• All-copper construction: Stranded bare copper conductor for maximum conductivity and flexibility
• PVC insulation: Durable thermoplastic jacket rated for a wide temperature range of -40°C to +85°C (-40°F to +185°F)
• US GPT rated: Meets General Purpose Thermoplastic (GPT) automotive wire standards for low-voltage use
• 18 AWG gauge: Ideal for signal runs, accessory circuits, and general automotive wiring tasks
• 500-foot metal spool: Comes wound on a metal spool with a 3/4-inch center hole, compatible with standard wire racks for easy dispensing
• Red color: Solid red insulation for quick, consistent color-coded circuit identification

GPT primary wire is a staple in automotive, marine, RV, and powersports installations. The all-copper conductor resists oxidation and maintains low resistance over the life of the installation. Install Bay is a brand of Metra Electronics, engineered for professional installers and enthusiasts who demand quality and consistency on every job.