The Classic Update Kit is engineered for builds that demand more circuits and flexibility than an original factory harness can provide. Each kit includes everything you need to rewire your vehicle from headlight to tail light, supporting today’s most popular upgrades such as electronic fuel injection, aftermarket gauges, and other custom modifications.
Features:
Modern ATC Fuse Panel:
Includes a fully updated fuse panel with modern GXL wire throughout. Every wire is printed with its function every 3–5 inches for effortless installation and troubleshooting.
Pre-Assembled Dash Harness:
Comes with our exclusive gauge cluster disconnect system, designed for both stock and aftermarket instruments for easy serviceability.
Engine & Front Light Harness:
Features extra-long leads for flexible routing and compatibility with modern engine and transmission combinations. Includes original-style bulkhead connectors for a clean, professional installation.
Rear Body Wiring:
Extra-long leads allow custom routing options, ideal for modified or restored vehicles.
Power Accessory Integration:
A built-in six-way power accessory plug provides a convenient power source for aftermarket accessories.
High-Output Charging Ready:
Includes a 175-amp mega fuse kit and 6-gauge charge cable to support high-output alternators and internally regulated charging systems.
OEM-Quality Components:
Complete with original-style replacement connectors, terminals, and lamp sockets for a factory-quality finish.
Updated Switches & Adapters:
Includes a 26-amp headlight switch with built-in circuit breaker, a new floor dimmer switch, and a dash harness connector compatible with ’69+ GM steering columns. A mating connector and terminals are provided for seamless adaptation to popular late-model columns.
Gauge Cluster Compatibility:
Includes printed circuit board connectors and terminals for easy integration with factory or custom gauge setups.
