Highway 22 Plus Universal Wiring System

The Highway 22 Plus is American Autowire’s flagship universal wiring system, designed for high-end custom vehicles that demand reliability, expandability, and professional-grade performance. This updated version builds on the proven Highway Series foundation with added modern features, improved protection for high-amp charging systems, and clearer installation guidance. It’s suitable for nearly any vintage or custom application, from street rods and muscle cars to trucks, off-road vehicles, and specialty builds.

• 22 fully labeled circuits for complete vehicle wiring
• Built-in LED flasher supports LED turn signals without additional modules
• Backup light feed and modern power routing for newer drivetrain installs
• Pre-installed 20 amp relay configurable for keyed 12V or ground-triggered operation
• Upgraded 20 amp wiper circuit compatible with aftermarket wiper systems
• A/C and heater circuit moved to accessory power to reduce starter load
• High-amp alternator and main power connection kit included
• Uses 6 gauge wire with dual 175 amp MegaFuses for charging system protection
• Extra wiring and connectors included for 4-headlight systems
• Extended neutral safety switch wiring for console shifter applications
• G-10 composite fuse panel base with durable nylon components
• GM-color-coded GXL/XLPE wire with printed circuit labels every 3–4 inches
• Heavy-duty power studs for battery and accessory expansion
• Self-locking screw clamp terminals for secure connections
• Signature American Autowire gauge cluster disconnect included
• Ignition switch, headlight switch, and dimmer switch included
• Full-color, step-by-step installation manual in tabloid format