Firebird Central | 1974 - 1978 Firebird and Trans Am Classic Update Complete Wiring Harness Kit, Buy Yours Today!

Home > Wiring Harness >

1974 - 1978 Firebird and Trans Am Classic Update Complete Wiring Harness Kit

Our Price: $1,190.35

PART NUMBER: WIR-2503

Qty:

Description

Technical Specs

Extended Information

1974 - 1978 Firebird and Trans Am Classic Update Complete Wiring Harness Kit

Brand new classic update complete wiring harness kit for 74 - 78 Firebird and Trans Am models. This new kit includes wiring from front to back. Not a generic nightmare, this is the real deal. Designed specifically for 74, 75, 76, 77 and 78 Firebird models. Premium quality updated wire harness kit with excellent customer service!

Click for: Detailed American Autowire Instructions for the 74 - 78 Classic Update Kit!

NOTE: This kit is 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 Injection systems.

***See the 15 features below that makes this the most complete system of its type in the industry!

PART NUMBER: WIR-2503

Features

New Complete Wiring Harness System For Your 74 - 78 Bird!
1. A replacement headlight switch with internal 30 amp circuit breaker, retention collar nut, adjustable length shaft, and custom knob.
2. Standard turn signal and hazard flashers are mounted on NEW STYLE PUSH IN FUSE PANEL. A new horn relay is mounted on the main dash harness.
3. Fuse box designed to fit in original location with no modifications. All required hardware supplied. New ATO fuse panel allows 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.
4. Original style switch connector bodies – an American Autowire exclusive feature.
5. Steering column connectors can plug directly into many aftermarket steering columns or stock 1974-1978 GM columns that use stock GM turn signal switches.
6. Complete factory heater harness assembly included.
7. Separate under dash courtesy lamps for use along with your original dome / interior lighting.
8. Instrument Cluster wiring is designed with a “cluster harness disconnect” system for easy service and assembly. Original terminals and PC board connector (another American Autowire exclusive) are provided for stock cluster connections. The system will also connect into most popular aftermarket gauges such as AUTOMETER, CLASSIC INSTRUMENTS, DAKOTA DIGITAL, STEWART WARNER, VDO and others.
9. Rear body harness assembly plugs into the main harness in the stock location and our longer leads allow for stock or custom routing of the wires. Rear body wiring includes complete backup light leads with correct lamp sockets, complete stop and tail light leads with correct lamp sockets, complete rear side marker leads with correct long focal length molded lamp sockets, complete license plate leads with correct lamp sockets, and fuel tank sender wire with trunk grommet and tank connection.
10. New floor mounted dimmer switch is provided for ease of installation. Wire length and connection accommodate original floor mount dimmer switch.
11. GM bulkhead connectors for the engine and front light wiring are included (another American Autowire exclusive) and allow for easy installation with original or custom routing.
12. 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 connectors are supplied for GM “SI” series internally regulated alternators. GM “CS” series alternator adapter is available separately.
13. Front lighting includes extra-long leads that can be routed for stock or optional appearances. All headlight connectors and terminals, parking and directional light leads and lamp sockets, and side marker leads and lamp sockets are provided along with a switched trigger wire for an electric fan relay (usually recommended with AC).
14. All the various connectors and terminals for your windshield wiper / washer system are provided.
15. Color schematics and easy to understand installation instructions included.