1970-72 Chevelle & ElCamino
Classic Update Series™ Wiring System (Part # 510105)

1970-72 Chevelle 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:

  • A replacement headlight switch with internal 30-amp 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. 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 after market accessories such as: gauge packages, wiper systems, heat and air conditioning systems, etc.
  • Original switch connector bodies!
  • Steering column connectors can plug directly into most aftermarket steering columns or stock 1970-72 GM columns that use stock GM turn signal switches.
  • 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 for easy service and assembly. Original terminals and connectors 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.
  • 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 backup light lead wires with correct lamp sockets, stop and tail light lead wires with correct lamp sockets, terminals to mate with the license plate connection wire, side marker lead and ground wires with 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 connection accommodate original floor mount dimmer switch.
  • GM bulkhead connectors for the engine and front light wiring are included and allow for easy installation with original or custom routing.
  • 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 internally regulated alternators. GM "CS" series alternator adapter is available separately.
  • Front lighting includes extra long leads that can be routed for stock or optional appearances. All headlight, parking and directional light connectors (lamp socket pigtails are also provided for 1971-72 applications) and terminals are provided along with a switched trigger wire for an electric fan relay (usually recommended with AC).
  • Original style light sockets, switch body connectors, terminals, etc. packed into every aspect of this harness help make it the most complete system of its type in the industry!
  • 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 Convertible Top Power Kit - Part # 510120
  • Optional Wiring Harness Tail Light Kit - Part # 510166
  • 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 # 510105).

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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