Description
The American Autowire 1970-73 Pontiac Firebird Update Kit (AAW510174) is a complete electrical solution designed for modified vehicles. This kit replaces the factory wiring from headlights to taillights, providing a modern, robust system capable of supporting popular aftermarket upgrades such as electronic fuel injection (EFI), custom gauges, and other accessories. With an ATO-style fuse panel and clearly labeled GXL wiring, this kit offers enhanced reliability, simplified installation, and a professional, clean finish for your vehicle’s electrical system.
KEY FEATURES AND BENEFITS:
- Complete Wiring Solution: Replaces the entire factory harness from front to rear.
- Supports Modern Upgrades: Designed for EFI, aftermarket gauges, and other popular accessories.
- Enhanced Reliability: Modern GXL wiring with labels every 3 to 5 inches reduces installation errors and increases system longevity.
- Ease of Installation: Pre-built dash harness with gauge cluster disconnect system simplifies connections and servicing.
- Custom Routing: Extra-long leads on engine and rear harnesses allow flexible installation to accommodate modified engine placement.
- High-Output Charging Support: Includes 175 amp mega fuse kit with 6-gauge charge cable for high-output alternators.
SPECIFICATIONS:
- Fuse Panel Type: Modern ATO-style
- Wire Type: GXL wire with circuit functions labeled every 3 to 5 inches
- Charge System: 175 amp mega fuse kit with 6-gauge charge cable
- Included Components: Pre-built dash harness with gauge cluster disconnect system, engine and front light harness, rear body wiring harness, headlight switch with 26-amp internal circuit breaker, new floor dimmer switch, turn signal flasher, hazard flasher, horn relay (remotely mounted), original-style bulkhead connectors, six-way power accessory plug, connectors and terminals for GM 69+ and late-model steering columns, gauge cluster printed circuit board connector and terminals, lamp sockets for all rear lights
HOW TO USE:
- Preparation: Disconnect the battery and remove the existing factory wiring harness, starting from the engine bay and working toward the dashboard and rear of the car.
- Fuse Panel Installation: Mount the modern ATO-style fuse panel in the original factory location as the central hub.
- Front and Engine Wiring: Route and install the engine and front light harness, using extra-long leads and bulkhead connectors for clean pass-through into the passenger compartment.
- Dash and Interior Wiring: Connect the pre-built dash harness, headlight switch, floor dimmer switch, and other dashboard components. Utilize the gauge cluster disconnect system for easy instrument cluster connections.
- Rear Body Wiring: Install the rear body harness, routing to taillights, license plate lamp, and backup lights.
- Accessory Integration: Connect aftermarket accessories using the six-way power accessory plug; supports EFI systems and HEI distributors.
- Final Connections and Testing: Reconnect the battery and verify all electrical systems, including lights, horn, and signals.
BENEFITS OF USING AMERICAN AUTOWIRE 1970-73 PONTIAC FIREBIRD UPDATE KIT (AAW510174):
- Provides a modern, reliable electrical foundation for modified vehicles.
- Eliminates issues associated with brittle, aging factory wiring.
- Supports modern upgrades like EFI, aftermarket gauges, and additional accessories.
- Pre-labeled wires and direct-fit connectors simplify installation and reduce errors.
- Enhances safety with updated fuse and circuit protection.
- Saves time compared to custom wiring, with a professional-quality finish.
FEATURES:
- Pre-installed bulkhead connectors for clean, factory-like pass-through.
- Six-way power accessory plug for aftermarket components.
- Compatible with original and most aftermarket gauges.
- Supports internally regulated “SI” series GM alternators.
- Full 12-volt primary ignition feed wiring.
- Specific connectors included for late-model steering column adaptation.
- Turn signal flasher, hazard flasher, and horn relay are remotely mounted.
- Extra-long engine and rear harness leads for custom routing and modified engine placement.






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