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American Autowire is proud to announce the release of the updated 510174 Firebird Classic Update Kit, a complete redesign crafted exclusively for the 1970-73 Pontiac Firebird. After extensive customer feedback and careful product evaluation, we’ve implemented a comprehensive set of improvements that further distance this already exceptional kit from its Camaro-based predecessor.
This is not just a refinement—it’s a ground-up overhaul designed specifically with Firebird enthusiasts in mind.
The updated 1970-73 Firebird kit includes:
An updated ATC fuse panel and fuses, along with modern GXL wire throughout. Wire functions are labeled every 3 to 5 inches.
Pre-built dash harness and our exclusive gauge cluster disconnect system for use with stock or aftermarket instruments.
Engine and front light harness with extra-long leads for custom routing and updated engine and transmission combinations. Original-style bulkhead connectors included.
A six-way power accessory plug that can be used as a convenient power source for aftermarket accessories.
A rear body wiring with extra-long leads for custom routing.
175 amp mega fuse kit with 6 gauge charge cable to support a high output charging system and internally regulated alternator.
Comprehensive Dash Support: Designed for both the standard dash and optional Rally Gauge cluster, including factory-style lighting for the voltmeter and fuel gauge. Also supports most aftermarket gauge packages.Heating & A/C Compatibility: Includes a complete factory-style heater harness. Optional factory A/C kits (510996 for 1970-71, 510998 for 1972-73) available separately. Aftermarket heat/A/C systems are also supported.
Console PRNDL Lighting Extension: Comes pre-wired for console shifter illumination.
Tachometer Ready: Services both early (1-wire) and late (2-wire) factory tach setups.
Accurate Rear Lighting Harness: Includes all correct lamp sockets and trunk clips for a true OEM fit.
Parking Lamp Compatibility: Supports both early (1970–early ‘72) and late (late ‘72–’73) style parking lamps.
Rally Gauge Temp Sender Harness: Includes correct jumper harness and clear instructions for both warning lamp and rally gauge installations.
Ram Air Power Feeds: Comes with three distinct 12V power feed wires for various Ram Air configurations (Ram Air harnesses sold separately).
T400 Transmission Support: All necessary underhood wiring and clear instructions included.
