American Autowire 69-72 Chevy & GMC Truck Update Kit (AAW510089)

The American Autowire 69-72 Chevy & GMC Truck Update Kit (AAW510089) is a full-vehicle wiring solution designed for classic truck projects that need more circuits and modern functionality than the original factory harness could provide. This kit is a complete replacement for your truck’s entire electrical system, from the headlights to the taillights, and it’s built to accommodate a wide range of popular modifications and additions.

KEY FEATURES AND BENEFITS:

• Modern Fuse Panel: The kit includes an updated ATC (blade-style) fuse panel and fuses. This is a significant improvement over the original glass fuses, offering superior reliability and protection for your electrical system.
• Labeled, High-Quality Wire: The entire harness is built with modern GXL wire, which is a high-temperature, abrasion-resistant material. Every wire function is clearly labeled every 3 to 5 inches, simplifying the installation process and making future troubleshooting easier.
• Comprehensive Harnesses: Includes pre-built, extra-long harnesses for the dash, engine, and front and rear lighting. The added length allows for either factory-style routing or a cleaner, custom installation.
• Support for Modern Modifications: Designed for a variety of popular upgrades, the kit includes connectors for HEI and EFI systems, a mega fuse kit for high-output alternators, and a six-way power accessory plug for easy component additions.
• Integration with Aftermarket Gauges: The dash harness features an exclusive gauge cluster disconnect system that works with both original gauges and aftermarket options such as Dakota Digital.

SPECIFICATIONS:

• Included Components:
  • Updated ATC fuse panel and fuses
  • Complete dash, engine, front, and rear wiring harnesses
  • Headlight switch with an internal 26-amp circuit breaker
  • New floor dimmer switch
  • 175-amp mega fuse kit with a 6-gauge charge cable
  • Replacement ignition switch (compatible with HEI and EFI)
  • Standard turn signal flasher, hazard flasher, and horn relay
  • Original-replacement connectors, terminals, and lamp sockets

HOW TO USE:

1. Preparation: Disconnect the vehicle’s battery. Remove and label all original wiring harnesses and components to be replaced, including the old fuse panel, switches, and wiring.
2. Mounting the New Fuse Panel: Secure the new ATC fuse panel in the original under-dash location for a clean, factory-like installation.
3. Dash Harness Installation: Route the new dash harness behind the instrument panel. Connect labeled wires to gauges, switches, and other components using the provided gauge cluster disconnect system.
4. Engine and Front End Wiring: Route the engine and front light harnesses. Connect wires to headlights, turn signals, horn, and engine components like the alternator and distributor (including HEI and EFI).
5. Rear Body Wiring: Route the rear body harness to the back of the truck to connect taillights, brake lights, and fuel tank sender.
6. Final Connections: Install the new headlight switch, floor dimmer switch, and ignition switch. Connect the mega fuse and 6-gauge charge cable. Perform a final check before reconnecting the battery and testing all electrical functions.

BENEFITS OF USING THE AMERICAN AUTOWIRE 69-72 CHEVY & GMC TRUCK UPDATE KIT (AAW510089):

• Modernization: Replaces outdated glass fuses and brittle wires with modern materials and a new fuse panel, reducing the risk of shorts and electrical fires.
• Ease of Troubleshooting: Labeled GXL wire simplifies installation and makes future modifications or repairs straightforward.
• Aftermarket Compatibility: Designed to support popular modifications like HEI ignition, EFI systems, and aftermarket gauges.
• Comprehensive Coverage: Provides a full-vehicle solution from front to back, ensuring all circuits are covered.
• Peace of Mind: Offers reliability and safety for both daily driving and high-performance restorations.

FEATURES:

• Replaces the entire electrical system from front to back.
• Designed to fit 1969-1972 Chevrolet and GMC C/K series trucks, Blazers, and Suburbans.
• Includes a connector for the 1969+ GM steering column, with a mating connector for late model column swaps.
• Supports a standard turn signal flasher, hazard flasher, and horn relay mounted on the fuse panel.
• Uses original-style bulkhead connectors for a clean firewall pass-through.
• All harnesses are extra-long for flexible routing options.