Classic Update Harness | Chevy Truck (1969-72)

Bulkhead connectors included. That is the difference. Most harness kits hand you a bag of terminals at the firewall and wish you luck. This one arrives with the GM bulkhead connectors for the engine and front light wiring already made up; so the hardest looking part of the job is the part you do not do. It is the American Autowire Classic Update harness for the 1969-72 Chevrolet truck. Original switch connector bodies; fuse panel in the factory location with the flashers and horn relay mounted right on it; new floor dimmer cut for the original floor position. The cluster disconnect gives you both futures at once. Factory gauges with original terminals and sockets today; AutoMeter or Dakota Digital later without touching the dash harness again. Rear body wiring covers pickup and Suburban bodies and plugs into the original retainers so the routing still looks factory when the bed goes back on. Points or HEI; SI series or one wire alternator. It is all in the schematic.

  • GM bulkhead connectors included - the firewall pass through arrives made up instead of as a bag of loose terminals.
  • Original switch connector bodies - your switches plug in the way they did from the factory.
  • Pickup or Suburban - the rear body harness covers both bodies and uses the existing retainers.
  • Points or HEI - distributor and alternator connectors for the ignition and charging system you are actually running.
  • Cluster disconnect - factory gauges with original sockets now; an aftermarket cluster later on the same harness.

Install Level: Moderate

Turn signal flasher; hazard flasher and horn relay are mounted on the fuse panel.
Fuse box is designed for the original location with all required hardware supplied; the position clears gauge packages; wiper systems; heat and air conditioning and stock or aftermarket GM tilt columns.
Original switch connector bodies are included.
Steering column connectors plug into most aftermarket columns and into 1969 and later GM columns using stock GM turn signal switches; the original column can be wired with the supplied mating connector and terminals.
Separate under dash light sockets are included along with the original dome and interior lighting wiring.
Instrument cluster wiring uses a cluster harness disconnect system with all original terminals; connectors and light sockets for the factory gauges and a clean path to AutoMeter; Classic Instruments; Dakota Digital; Stewart Warner or VDO packages.
Rear body harness plugs into the main harness in the original position using the existing retainers; both pickup and Suburban models are accommodated.
Rear body wiring includes backup light wires and mating connectors; license plate lead with connectors and terminals; fuel tank sender wire and terminal; jamb switch and dome light leads.
A new floor dimmer switch is provided; wire length and connection suit the original floor mounted dimmer.
GM bulkhead connectors for the engine and front light wiring are included ready for installation.
Engine wiring includes connectors for points type and HEI distributors with power and tach connectors for GM HEI; alternator connectors suit GM SI series internally regulated and one wire alternators; the GM CS series connector is available separately.
Front lighting leads run extra long for custom under hood routing and include a switched trigger wire for an electric fan relay.
Lead time field reads 2-4 Weeks. The listing also states that all Classic Update Kits are averaging 4-5 weeks from date of order; plan for the longer figure.

American Autowire
SKU: 510089 ISBN: 40328348434622
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Classic Update Harness | Chevy Truck (1969-72)
$857.00
Overview
Specifications
Tech Resources
Compatibility

This Classic Update Harness comes with everything you need for your 1969-72 Chevy truck, including color schematics and easy to understand instructions for an easy install. For the full list of features, please read our provided details. 


Details

  •  Replacement headlight switch with internal circuit breaker included. Retention collar nut, adjustable length shaft, and custom knob are also included. Extra connectors and instructions are supplied for the installation of original headlight switches.
  • Standard turn signal flasher, hazard flasher, and horn relay mounted on fuse panel.
  • Fuse box designed to fit in the original location. All required hardware supplied. Location selected for easy accessibility and clearance of under dash accessories such as all gauge packages, wiper systems, heating, and air conditioning systems, and stock original or aftermarket GM tilt steering columns.
  • Original switch connector bodies! (Exclusive to American Autowire)
  • 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.
  • Along with wiring for your original dome/interior lighting we have included separate under dash light sockets.
  • 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. However, the best aspect of the disconnect system is that any gauge cluster package can be easily and neatly wired in. This includes AUTOMETER, CLASSIC INSTRUMENTS, DAKOTA DIGITAL, STEWART WARNER, and VDO, just to name a few.
  • Rear body harness assembly is designed to plug into the main harness in the original position utilizing existing retainers. Flexibility in harness design allows for original or custom routing. Both pickup and suburban models are accommodated. Rear body wiring includes backup light wires and mating connectors for backup light leads. License plate lead, connectors, and terminals included. Fuel tank sender wire and terminal included. Leads and terminals included for jamb switches and dome light.
  • The new floor dimmer switch is provided. Wire length and connection accommodate the original floor mount dimmer switch.
  • EXCLUSIVE! GM bulkhead connectors for the engine and front light wiring are included and ready for easy installation. Original or custom routing of the new harness is no problem!
  • Engine wiring includes connectors for points type and H.E.I. distributors. Power and tach connectors supplied for GM H.E.I. distributors. Alternator connectors are supplied for GM “SI” series internal regulated and all “one wire” alternators. GM “CS” series alternator connector is available separately.
  • 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).


  • *All Classic Update Kits are currently averaging 4-5 weeks from date of order.
American Autowire part number 510089
Vendor: American Autowire
Application: 1969-72 Chevrolet trucks
Contents: main dash harness; fuse panel; engine and front lighting wiring; rear body harness; instrument cluster wiring; color schematics and instructions
Replacement headlight switch with an internal circuit breaker; retention collar nut; adjustable length shaft and custom knob; extra connectors and instructions are supplied for reusing an original headlight switch.
Turn signal flasher; hazard flasher and horn relay are mounted on the fuse panel.
Fuse box is designed for the original location with all required hardware supplied; the position clears gauge packages; wiper systems; heat and air conditioning and stock or aftermarket GM tilt columns.
Original switch connector bodies are included.
Steering column connectors plug into most aftermarket columns and into 1969 and later GM columns using stock GM turn signal switches; the original column can be wired with the supplied mating connector and terminals.
Separate under dash light sockets are included along with the original dome and interior lighting wiring.
Instrument cluster wiring uses a cluster harness disconnect system with all original terminals; connectors and light sockets for the factory gauges and a clean path to AutoMeter; Classic Instruments; Dakota Digital; Stewart Warner or VDO packages.
Rear body harness plugs into the main harness in the original position using the existing retainers; both pickup and Suburban models are accommodated.
Rear body wiring includes backup light wires and mating connectors; license plate lead with connectors and terminals; fuel tank sender wire and terminal; jamb switch and dome light leads.
A new floor dimmer switch is provided; wire length and connection suit the original floor mounted dimmer.
GM bulkhead connectors for the engine and front light wiring are included ready for installation.
Engine wiring includes connectors for points type and HEI distributors with power and tach connectors for GM HEI; alternator connectors suit GM SI series internally regulated and one wire alternators; the GM CS series connector is available separately.
Front lighting leads run extra long for custom under hood routing and include a switched trigger wire for an electric fan relay.
Lead time: 2-4 Weeks
Listed price 857.00 USD
Variant count: 1
No published wire gauge chart; harness length or shipping weight on this listing
Fits 1969-72 Chevrolet trucks.
Complete replacement wiring for the dash; engine; front lighting and rear body circuits of that cab.
Published applications:
1969-72 Chevrolet C10 C20 C30 and K series pickups
1969-72 Chevrolet Suburban
1967-72 Chevy Trucks

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