American Autowire 73-79 Ford Truck/78-79 Bronco Update Kit (AAW510342)

The American Autowire 73-79 Ford Truck/78-79 Bronco Update Kit (AAW510342) is a complete, vehicle-specific wiring harness designed to replace the entire electrical system of these classic vehicles. As part of the Classic Update series, it goes beyond a simple replacement, providing a modern, reliable electrical foundation that is ready to support popular upgrades and modifications. From headlight to tail light, this kit provides a solution that eliminates the risk and frustration of dealing with decades-old wiring.

KEY FEATURES AND BENEFITS:

• Modernization and Reliability: Replaces the entire stock wiring system with a new, high-quality harness featuring an updated ATO fuse panel and modern GXL wire, eliminating common electrical failures.
• Accommodates Modifications: Designed to support upgrades such as electronic fuel injection (EFI), aftermarket gauges, and updated engine/transmission combinations, with extra-long leads for flexible routing.
• Simplified Installation: Pre-built harnesses for dash, engine, and front lights, with each wire labeled every 3 to 5 inches for easier installation and future troubleshooting.
• Ready for High-Output Systems: The included 175-amp mega fuse kit and 6-gauge charge cable support modern high-output alternators and electrical demands.
• Comprehensive Component Replacement: Comes with new headlight switch with 26-amp circuit breaker, floor dimmer switch, and replacement ignition switch compatible with modern systems.

SPECIFICATIONS:

• Wire Type: GXL Wire
• Fuse Panel: ATO Style
• Alternator Support: Designed for high-output, one-wire, or internally regulated alternators (e.g., GM “SI” style)
• Included Components:
• Pre-built dash harness
• Pre-built engine harness
• Pre-built front light harness
• Rear body wiring
• New headlight switch with circuit breaker
• New floor dimmer switch
• Replacement ignition switch
• Standard turn signal and hazard flashers
• Horn relay
• 175-amp mega fuse kit with 6-gauge charge cable
• Original-replacement connectors, terminals, and lamp sockets
• Steering column adapter kit

HOW TO USE:

• Removal of Old Wiring: Safely disconnect the vehicle’s battery and remove the original wiring harness, noting routing and connections.
• Mounting the Fuse Panel: Install the new ATO fuse panel in the original location using factory mounting points.
• Harness Installation: Route the new pre-built harnesses (dash, engine, front lights) according to instructions. Extra-long leads allow both stock and custom routing.
• Component Connections: Connect harnesses to components, including headlight, dimmer, and ignition switches, gauges, lights, and accessories, using included connectors and terminals.
• Final Checks: Review all connections and harness routing before reconnecting the battery. Verify correct fuse placement and test all electrical functions.

BENEFITS OF USING THE AMERICAN AUTOWIRE 73-79 FORD TRUCK/78-79 BRONCO UPDATE KIT (AAW510342):

• Increased Safety: New, reliable wiring reduces the risk of electrical shorts, fires, and failures associated with aging harnesses.
• Enhanced Functionality: Provides necessary circuits and power for modern accessories, allowing safe addition of upgrades not supported by the original system.
• Simplified Troubleshooting: Clearly labeled wires and modern fuse panel make diagnosing and fixing future electrical issues easier.
• Improved Resale Value: A professionally wired vehicle with a modern electrical system is more appealing and valuable to buyers.
• Peace of Mind: Ensures your electrical system is new and ready to support modern technology, allowing you to enjoy your classic vehicle worry-free.

FEATURES:

• Designed for projects requiring more circuits than the original harness
• Wire functions labeled every 3 to 5 inches
• Pre-built dash harness with a unique gauge cluster disconnect system
• Engine and front light harness with extra-long leads for custom routing
• Six-way power accessory plug for aftermarket additions
• Rear body wiring with extra-long leads
• Headlight switch with a 26-amp internal circuit breaker
• New floor dimmer switch and replacement ignition switch included
• Steering column adapter kit for stock or aftermarket columns