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1974-78 Pontiac Firebird Classic Update Wiring Harness Kit by American Autowire 510683

$1,190.35

American Autowire harness kits may have up to a 3 week build time. Contact us for availability

Classic Update kits are designed for projects that require more circuits than would have been available in an original chassis harness. Each kit includes all the basics needed to rewire a vehicle from headlight to tail light, and will accommodate popular add-on items such as electronic fuel injection, aftermarket gauges and common supporting modifications. This harness includes, but is not limited to:

  • 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.
  • Six-way power accessory plug can be used as a convenient power source for aftermarket accessories.
  • Rear body wiring with extra-long leads allows for custom routing.
  • 175 amp mega fuse kit with 6 gauge charge cable to support a high output charging system and internally regulated alternator.
  • Original-replacement connectors, terminals and lamp sockets. 
  • Headlight switch with 26 amp internal circuit breaker and new floor dimmer switch included.
  • Dash harness includes a connector for the 69+ GM  steering column connector. A mating connector and terminals are included for easy adaption to popular late model columns.
  • Connector, wiring and lamp sockets for factory center console included.