The American Autowire 500434 Classic Update Kit is a complete, high-performance wiring harness system specifically designed for 1957 Chevy passenger cars, including Bel Air, 210, and 150 models. This kit is ideal for restorers and custom builders who want to modernize their vehicle’s electrical system while maintaining compatibility with original components and aesthetics.
Key Features
- 18-Circuit System: Supports modern electrical demands including EFI, electric fans, power accessories, and upgraded lighting.
- Modern Fuse Panel: ATO/ATC-style fuse block with a bolt-on under-dash mounting plate for easy installation.
- GXL Wiring: High-quality, heat-resistant wire labeled every 3–5 inches for simplified routing and identification.
- Pre-Built Dash Harness:
- Exclusive gauge cluster disconnect system
- Compatible with stock and aftermarket gauges
- Engine & Front Light Harness:
- Extra-long leads for custom routing
- Includes connectors for HEI distributors, internally regulated alternators, and electric fan relay triggers
- Rear Body Harness:
- Weatherproof boots and tube assemblies
- Includes wiring for tail lights, license plate lights, fuel tank sender, and dome light
Compatibility & Integration
- Steering Columns: Connectors compatible with most aftermarket columns and 1969 Up GM columns; adapters included for original columns
- Lighting & Switches:
- Replacement headlight switch with internal circuit breaker
- New floor dimmer switch
- Turn signal and hazard flashers
- Horn relay mounted on the fuse panel
- Accessory Support:
- Six-way power accessory plug for power windows, seats, cruise control, fuel pump, and more
- Heater control panel wiring for original and aftermarket HVAC systems
What’s Included
- Original-style connectors, terminals, and lamp sockets
- Headlight bucket grommets, parking light boots, and tube assemblies
- Replacement ignition switch with indexed connector
- Color schematics and detailed installation instructions
- 175-amp mega fuse kit with 6-gauge charge cable for high-output alternators
Vehicle Fitment
Compatible with:
- Chevrolet: Bel Air, 210, 150 1957
