Eckler's Catalogs Available Now!

Father’s Day Sale – Up to 40% Off! Shop Now >

Find Wiring Harnesses for your Corvette

Engine Wiring Harness 454ci With Automatic Transmission Show Quality (1974 Corvette C3)Find parts that fit my vehicle

Item EK-25-124296-1
Our Price

$359.99

Military, Medical & First Responders $18.00 Available in EK Cash Rewards.
Confirm Eligibility

Add to Cart
Save for later
    Create a list
    Add to New List

    Saved - View your saved items

    We're sorry. We couldn't save this product at this time.

    or use

    Shop Owners Save More! Sign up for our dealer program
    Join For FREE
    Loading Indicator

      Product Information

      Features, Description, Q&A, Specs & Installation

      Features

      • All Big Block With Automatic Transmission
      • Requires Use Of T.C.S. Wiring Switch Located In Passenger Side Cylinder Head
      • Customer Must Re-Use Their Seat Belt Interlock Override Relay Connector
      • Connects To Accessory Junction Block On Driver Side Inner Fender Apron
      • Connects To Alarm System Anti-Tamper Switch
      • Connects To Carburetor Idle Stop Solenoid
      • Connects To Dash Harness Connection At Firewall
      • Connects To Dash Harness Connection
      • Connects To Ground At Bell Housing Bolt
      • Connects To Heater Blower Motor For Cars Without A/C
      • Connects To Heater Blower Motor Ground Terminal For Cars Without A/C
      • Connects To Hood Ajar Switch
      • Connects To Ignition Coil Plus Terminal
      • Connects To Oil Pressure Sending Unit Wire Connection
      • Connects To Starter Interlock System Override Switch Connector With Customer Reusing Connector
      • Connects To Starter Solenoid
      • Connects To Temperature Controlled Spark Solenoid On Intake Manifold
      • Connects To Temperature Controlled Spark Switch Harness Connection In Passenger Side Cylinder Head
      • Connects To Transmission Kickdown Solenoid On Transmission
      • Connects To Transmission Kickdown Switch At Gas Pedal
      • Connects To Windshield Washer Pump
      • Connects To Windshield Wiper Motor
      • Connects To Windshield Wiper Motor Ground Terminal
      • Fits 1974 Corvette C3

      Description

      Engine Harness Overview. The Engine Wiring Harness 454ci With Automatic Transmission Show Quality is engineered to provide reliable and simplified electrical connectivity for big block engines paired with automatic transmissions. It integrates all essential wiring connections and components, ensuring efficient vehicle operation and seamless communication between systems. This harness maintains the factory-style electrical network and supports integration with systems like the temperature controlled spark and starter interlock components.

      Construction and Appearance. Crafted to meet strict OEM standards, this wiring harness employs durable, heat-resistant wiring and protective insulation designed for engine bay conditions. It features a professional finish with precisely terminated connectors and neatly bundled wiring for optimal fitment and long-term reliability.

      Installation. Installation is straightforward for experienced automotive professionals familiar with 1974 big block Corvettes with automatic transmissions. No drilling is required; however, reusing the existing seat belt interlock relay connector is necessary for proper operation.

      Application. Specifically designed for the 1974 Corvette C3 equipped with big block engines and automatic transmissions, this harness fits the model exactly and supports all factory electrical systems associated with the engine bay and transmission control.

      CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

      Tech Specs

      Questions & Answers

      No questions about this product yet. Ask the First Question