American Auto Wire 1974 - 1978 Pontiac Firebird Wiring Harness # 510683

To make sure you receive your package, all items $500 and over are sent signature required

This item will ship directly from American Auto Wire in New Jersey.

1974-78 Pontiac Firebird CLASSIC UPDATE KIT

Please note: Classic Update Kits do not support Ammeters

Classic Update Kits give you one of the most complete kits on the market to "Make Wiring THAT Easy". They are designed for specific year, make, and model configurations. The kit boasts 14 features making itthe most complete system of its type in the industry including:

• Kit Features:

• replacement headlight switch with internal 30amp circuit breaker, retention collar nut, adjustable length shaft, and custom knob.
  
  
• Standard turn signal and hazard flashers are mounted on fuse panel. A new horn relay is mounted on the main dash harness.
  
  
• Fuse box designed to fit in original location with no modifications. All required hardware supplied. New ATO fuse panelallows for easy fuse and circuit breaker accessibility. Harness is laid out and formed to allow for nearly all aftermarket accessories such as; gauge packages, wiper systems, heat and air conditioning systems, etc.
  
  
• Original switch connector bodies - an American Autowire exclusive feature
  
  
• Steering column connectors can plug directly into many aftermarket steering columns or stock 1974-77 GM columns that use stock GM turn signal switches.
  
  
• omplete factory heater harness assembly included.
  
  
• Separate under dash courtesy lamps for use along with your original dome/interior lighting.
  
  
• Instrument Cluster wiring is designed with a "cluster harness disconnect" system foreasy service and assembly. Original terminals and PC board connector (anotherAmerican Autowire exclusive) are provided for stock cluster connections. The systemwill also connect into most popular aftermarket gauges such as AUTOMETER,CLASSIC INSTRUMENTS, DAKOTA DIGITAL, STEWART WARNER, VDO and others.
  
  
• Rear body harness assembly plugs into the main harness in the stock location and ourlonger leads allow for stock or custom routing of the wires. Rear body wiring includescomplete backup light leads with correct lamp sockets, complete stop and tail light leadswith correct lamp sockets, complete rear side marker leads with correct long focallength molded lamp sockets, complete license plate leads with correct lamp sockets,and fuel tank sender wire with trunk grommet and tank connection.
  
  
• NEW floor dimmer switch is provided for ease of installation. Wire length and connectionaccommodate original floor mount dimmer switch.
  
  
• GM bulkhead connectors for the engine and front light wiring are included (anotherAmerican Autowire exclusive) and allow for easy installation with original or customrouting.
  
  
• Engine wiring includes connectors for original points type as well as H.E.I. distributors.Power and tach connectors supplied for GM H.E.I. distributors. Alternator connectorsare supplied for GM "SI" series internally regulated alternators. GM "CS" seriesalternator adapter is available separately.
  
  
• Front lighting includes extra-long leads that can be routed for stock or optionalappearances. All headlight connectors and terminals, parking and directional light leadsand lamp sockets, and side marker leads and lamp sockets are provided along with aswitched trigger wire for an electric fan relay (usually recommended with AC).
  
  
• All the various connectors and terminals for your wiper/washer system are provided.

The early GM/FORD generators and externally regulated alternators are just not up to the task of providing power to an expanded wiring system like these classic update kits. The point of this kind of kit is really to allow people a way to upgrade and expand their wiring system and so an alternator upgrade is usually part and parcel to this kind of upgrade.

NOTE: These kits are recommended for MODIFIED original vehicles, not OEM restoration projects.

Note: This wiring is designed to work on Internally regulated alternator and have a 12v feed for the coil/distributor/ignition box. This kit IS NOT set up with a resistance wire for a standard, points type ignition system. It is wired with a full 12 volt primary ignition feed that is hot in both the start and run positions. It will support HEI, MSD, other electronic ignition systems, as well as computerized Fuel Injec- tion systems. If you wish to run a points type system, there are illustrations on the engine connection pages to do so. Extra parts that are not included in this kit will be required to complete that operation. (see our other items).