1957 Chevrolet Fullsize/Passenger Car, Wagon & Nomad
Classic Update Series™ Wiring System (Part # 5000434)

1957 Chevrolet Fullsize/Passenger Car RestoMod Wiring Harness System
Look at everything that's included in this wiring kit!
Detailed instruction sheets also included, but not shown.
(click image to enlarge)

This is one of the most complete wiring systems in the industry.  Take a look at the numerous items and features it contains, including:

  • Original headlight bucket grommets, parking light weatherproof boot, tube assemblies, and light sockets are included. Extra long leads are supplied for custom routing.
  • Accessory disconnect provided for connections to power windows, power seats, cruise control, fuel pump, power door locks, extra radio (CB), or optional power accessory.
  • New floor dimmer switch is provided. Wire length and connection accommodate original floor mounted dimmer switch.
  • Standard turn signal flasher, hazard flasher, and horn relay mounted on fuse panel.
  • Fuse box and custom mounting plate are designed for bolt-on, under dash installation. All required hardware supplied.
  • Steering column connectors will plug directly into most aftermarket steering columns as well as 1969 and later GM columns which utilize stock GM turn signal switches. The original column can also be wired by using the supplied mating connector and terminals.
  • Heater control panel lighting, power, and blower motor leads are included for original style heaters as well as aftermarket heat and AC updates.
  • Instrument Cluster wiring is designed with a "cluster harness disconnect" system for easy service and assembly. All original terminals, connectors, and light sockets are also supplied for original cluster gauges.
  • Replacement headlight switch with internal circuit breaker, retention collar nut, adjustable length shaft, custom knob, extra connectors, and instructions are included.
  • Original design rear body weatherproof boot and tube assemblies and original design light sockets make attachment to original or reproduction tail light assemblies an easy plug-in.
  • Rear body harness assembly is designed to plug into the main harness in the original under dash position utilizing existing retention clips. License plate connectors and terminals included. Fuel tank sender wire and terminal included. Special terminals included for original.
  • New ignition switch is included with indexed connector. Additional connectors and instructions are provided to use the original 1957 ignition switch, original style door jamb switch, and overhead dome light.
  • Front lighting includes extra long leads for special routing when custom under hood appearance is desired. All headlight, park light, and directional light connectors and terminals are provided, as well as a switched trigger wire for electric fan relay (usually recommended with AC).
  • Engine wiring includes connectors for H.E.I. distributors. Power and tachometer connectors supplied for GM H.E.I. distributors. Alternator connectors are supplied for GM "SI" series internal regulator and 1-wire alternators.
  • Engine wiring includes starter and gauge sender leads for water temperature, oil pressure, and tachometer.
  • Heavy 8 gauge alternator leads are supplied.
  • Power circuits are fusible link protected.
  • Detailed color schematics and easy to understand installation instructions.

OPTIONAL PACKAGES can be added to this system, depending on your requirements.

  • Optional Alternator Conversion Harness - allows use of a Delco CS130-D (serpentine belt, internal fan) series internally regulated alternator - Part # 500295
  • Optional Alternator Conversion Harness - allows use of a 1984-99 Delco CS external fan series, internally regulated alternator - Part # VAK6986CS
  • Optional Courtesy Light Delay Module Kit - Part # 510197
  • Optional Torque Converter Lock-Up Switch Update Kit - Part # 500412
  • Optional Wiring Harness Backup Light Kit - Part # 500437
  • Optional Wiring Harness Convertible Top Power Kit - Part # 500444
  • Optional Terminal Crimping Tool Set - Part # 93963818

Some optional packages may not be available for all year/model vehicles. See catalog for more details.

Product Notice

Our Classic Update Series™ wiring system is designed for an upgraded/modified vehicle. Consequently, it:

  • does not support an ammeter, but will support a voltmeter.
  • does not support a stock generator, voltage regulator, or externally regulated alternator, but will support an internally regulated Delco "SI" Series or 1-wire alternator. Some adapters may be available for use with other internally regulated alternators. Refer to our online catalog.
  • does not connect to factory-original wiring since this complete system will replace all of your original wiring.

This Classic Update Series™ Wiring System is recommended only if you are building a fully customized, mostly customized, retro-mod/retro-rod type of vehicle. It is designed for that purpose. If your goal is to keep your vehicle to its factory-original or primarily factory-original configuration, we highly recommend that you purchase our individual Original Design Series wiring harnesses instead, then make any wiring modifications necessary to accommodate your upgrades/modifications.

All our wiring is Made in America

PRICE and BUY this Classic Update Series™ wiring system (Part # 500434).

Need Help?  Not sure if you should purchase our Original Design Series™, RestoMod Series™ or Classic Update Series™ Wiring System?  Here are some questions you can answer to help you make the right choice.

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