American Autowire 1964-66 Ford Mustang Classic Update Kit (AAW510125)

The American Autowire 1964-66 Ford Mustang Classic Update Kit (AAW510125) is a complete wiring solution designed to modernize and replace your Mustang’s entire electrical system. This kit provides a reliable and safe foundation for modern upgrades such as electronic fuel injection, high-output alternators, and aftermarket gauges. Pre-built harnesses and labeled GXL wires simplify installation, while the modular design ensures a professional, clean wiring layout for restomod and modified vehicles.

KEY FEATURES AND BENEFITS:

• All-in-One Wiring Solution: Includes all harnesses and connectors required to replace the dash, engine, and rear body wiring systems.
• Modern Fuse Panel: Updated ATC blade-style fuse panel with mounting bracket provides a safe and organized electrical system.
• Labeled Wiring: GXL automotive-grade wires are labeled every few inches, simplifying installation and future troubleshooting.
• Built-In Relays: Headlight, fog light, and horn relays protect switches and improve performance.
• High-Output Support: 175-amp mega fuse kit with 6-gauge charge cable accommodates high-output alternators and EFI systems.
• Gauge Cluster Disconnect: Pre-built dash harness allows easy service and replacement of stock or aftermarket instrument clusters.
• Steering Column Compatibility: Adapter kit included for both stock and aftermarket columns.

SPECIFICATIONS:

• Part Number: AAW510125
• Application: 1964-1966 Ford Mustang
• Fuse Panel: Updated ATC blade-style with mounting bracket
• Wire Type: Modern GXL (General Purpose Cross-linked) automotive wire
• Fuses: Full set of ATC fuses included
• Included Components:
  • Pre-built dash harness with gauge cluster disconnect system
  • Engine and front light harness with extra-long leads
  • Rear body harness with extra-long leads
  • New headlight switch with 26-amp internal circuit breaker
  • New replacement ignition switch
  • New floor dimmer switch
  • Steering column adapter kit for stock and aftermarket columns
  • 175-amp mega fuse kit with 6-gauge charge cable
  • Built-in headlight, fog light, and horn relays
  • Original-replacement connectors, terminals, and lamp sockets
  • Full-color schematics and installation instructions

HOW TO USE:

1. Preparation: Disconnect the battery and carefully remove the existing wiring harnesses from dash, engine, and rear body.
2. Mounting the Fuse Panel: Install the new ATC fuse panel in the designated location using the included bracket, keeping it away from heat sources.
3. Dash Harness Installation: Connect the pre-built dash harness to the fuse panel and route it to the headlight, ignition, and floor dimmer switches. Use the gauge cluster disconnect system for instrument panel wiring.
4. Engine and Front Light Harness Installation: Route the harness using extra-long leads. Connect wires to headlights, turn signals, ignition, sensors, and other engine components.
5. Rear Body Harness Installation: Plug into the main dash harness, route to the rear of the vehicle, and connect taillights, brake lights, and fuel sender unit.
6. Final Connections: Connect the 6-gauge charge cable to the alternator, complete accessory wiring, reconnect the battery, and test all circuits for proper operation.

BENEFITS OF USING AMERICAN AUTOWIRE 1964-66 FORD MUSTANG CLASSIC UPDATE KIT (AAW510125):

• Improved safety with modern GXL wire and blade-style fuse panel.
• Enhanced reliability, eliminating intermittent electrical problems.
• Supports modern upgrades such as EFI, high-output alternators, and aftermarket gauges.
• Simplified installation with pre-built harnesses and labeled wires.
• Dedicated circuits with integrated relays protect switches and ensure consistent performance.
• Convenient six-way power accessory plug for additional components.

FEATURES:

• Pre-built dash, engine, and rear body harnesses.
• New ATC fuse panel with mounting bracket.
• GXL wiring with clear labeling for function and destination.
• Compatible with internally regulated or one-wire alternators.
• Integrated headlight, fog light, and horn relays.
• Steering column adapter kit for stock and aftermarket columns.
• New headlight, ignition, and floor dimmer switches included.
• 175-amp mega fuse kit with 6-gauge charge cable.
• All necessary connectors, terminals, and lamp sockets.
• Cluster harness disconnect system for easy instrument panel servicing.