American Autowire 1987-1990 Jeep YJ Classic Update Kit (AAW510742)

The American Autowire 1987-1990 Jeep YJ Classic Update Kit (AAW510742) is a complete wiring solution designed to replace and upgrade the entire electrical system of your vehicle. This comprehensive harness modernizes your Jeep’s electrical system, providing a reliable foundation for both factory components and aftermarket accessories. It addresses common issues of old, failing wiring by replacing it with a high-quality system from bumper to bumper, making it ideal for full restorations or performance upgrades.

KEY FEATURES AND BENEFITS:

• Full-Vehicle Replacement: Replaces wiring from headlights to taillights, ensuring a new, reliable system throughout.
• Modern Fuse Box: Includes an ATC-style fuse panel for greater reliability and easier replacement compared to original glass fuses.
• Support for Modern Modifications: Extra circuits accommodate EFI, aftermarket gauges, and updated charging systems without overloading.
• Plug-and-Play Installation: Factory-style connectors for steering column, instrument cluster, and other stock components minimize cutting and splicing.
• High-Output Charging Support: Dedicated high-amp charging circuit with a mega fuse to safely power modern alternators and accessories.

SPECIFICATIONS:

• Main dashboard harness with pre-wired ATC fuse box
• Engine and front lighting harness with extra-long leads
• Rear body harness with provisions for original hard top wiring
• High-amp mega fuse kit with 6-gauge charge cable
• Horn and fog light relays
• Steering column adapter kit
• Instrument cluster harness with disconnect system
• Switched trigger wire for electric fan relay
• Door jamb switch leads
• Fuel tank sender and fuel pump leads
• Full-color schematics and installation instructions

HOW TO USE:

• Preparation: Disconnect the battery and remove the old wiring harness, including dashboard, engine, and rear body wiring.
• Dash Harness Installation: Install the new dash harness in the stock location. Use provided connectors for factory switches and instrument cluster. Utilize the cluster harness disconnect system for easy service access.
• Engine and Front Harness Installation: Route the engine and front light harness through the firewall. Use extra-long leads for custom routing to headlights, turn signals, alternator, and engine components. Connect the mega fuse and 6-gauge charge cable to the high-output alternator.
• Rear Body Harness Installation: Route the rear harness along the chassis to the rear. Connect taillights, license plate lamp, fuel tank sender, and fuel pump.
• Final Connections and Power-Up: Reconnect the battery. Verify all connections using the provided schematics. Test all electrical systems, including lights, gauges, and accessories before operating the vehicle.

BENEFITS OF USING AMERICAN AUTOWIRE 1987-1990 JEEP YJ CLASSIC UPDATE KIT (AAW510742):

• Reliable Electrical System: Eliminates issues with frayed wires, shorts, and intermittent failures common in aging wiring.
• Safe and Professional Installation: Modern components ensure a safe, clean, and professional-looking wiring setup.
• DIY-Friendly: Labeled wires and detailed instructions simplify the installation process for enthusiasts.
• Future-Proof: Supports new electrical accessories without overloading the system.

FEATURES:

• Full vehicle wiring replacement from bumper to bumper
• Updated ATC fuse panel with blade-style fuses
• Integrated relays for horn and fog lights
• Six-way power accessory plug for add-ons
• High-amp 175-amp mega fuse kit for charging system
• GXL automotive-grade wiring labeled every 3-5 inches
• Gauge cluster disconnect system for simplified service
• Supports stock and many aftermarket steering columns
• Factory-style Weatherpack connectors and terminals for a sealed fit
• Pre-wired provisions to support original hard top
• Separate courtesy lamp assemblies for under-dash lighting