The Classic Update Kit is the perfect choice for projects that require more circuits and flexibility than the original factory harness could provide. Each kit includes everything needed to rewire your vehicle from headlight to tail light, while supporting modern upgrades such as electronic fuel injection (EFI), aftermarket gauges, and other common performance or convenience modifications.
Kit Features:
Modern ATC Fuse Panel:
Includes a fully updated fuse block and fuses, constructed with high-quality GXL wiring throughout. Every wire is labeled every 3–5 inches for easy identification during installation.
Pre-Built Dash Harness:
Comes pre-assembled with our exclusive gauge cluster disconnect system, compatible with both stock and aftermarket instrument panels for simplified servicing.
Engine & Front Light Harness:
Features extra-long leads for flexible custom routing and compatibility with updated engine and transmission combinations. Includes original-style bulkhead connectors for a clean, professional fit.
Rear Body Wiring:
Extended-length wiring provides maximum routing flexibility for custom or modified vehicle layouts.
Power Accessory Integration:
A built-in six-way power accessory plug offers a convenient, centralized power source for aftermarket electronics.
High-Output Charging Support:
Includes a 175-amp mega fuse kit with a 6-gauge charge cable, designed to handle high-output alternators and internally regulated charging systems.
OEM-Quality Components:
Includes original-style connectors, terminals, and lamp sockets to maintain reliability and a professional-grade installation finish.
Switches & Column Connections:
Comes complete with a new 26-amp headlight switch featuring an internal circuit breaker, a new floor dimmer switch, and a dash harness connector compatible with ’69 and later GM steering columns. A mating connector and terminals are provided for easy adaptation to popular late-model columns.
Gauge Cluster Integration:
Includes printed circuit board connectors and terminals for seamless connection to factory or aftermarket gauge clusters.
