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Product Summary

73-87 Chevy, 73-87 GMC, 27 Number of Circuits

  • It is customizable to fit your projects needs
  • Specifically designed to fit the 1973-1987 GMC/Chevy trucks
  • Features a factory style bulkhead connector that allows for easy mounting of the fuse block
  • Kit comes with many of the factory connectors already installed on the harness out of the box
  • Each wire is custom printed with the circuit identification as well as using GM color codes for easy installation

Key Specs

MFG. Part #20205
BrandPainless Wiring

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Details

This 27 circuit 1973-1987 GMC/Chevy Painless wiring harness was designed to fit the trucks, Blazers, and Suburbans, whether C10, C20, or C30. It features a factory style bulkhead connector, allowing for easy mounting of the fuse block in the factory location, and has many of the factory connectors already installed on the harness out of the box. Including: the headlight connectors & switch, dimmer switch, wiper motor, ignition switch, blower motor & switch, blower resistor, and instrument cluster. Each wire is custom printed with the circuit identification as well as using GM color codes for easy installation.  Wire your Squarebody once and wire it right with Painless!

  • Customizable To Fit Your Projects Needs
  • Every Wire Has Its Function Printed On It Every Few Inches
  • Pre-Grouped Wire Sections
  • Comprehensive Instructions And Tech Support 

Includes:

  • Headlight connectors & switch
  • Dimmer switch
  • Wiper motor
  • Ignition switch
  • Blower motor & switch
  • Blower resistor
  • Instrument cluster 

Features

Harness includes circuits for: 

  • A/C & Heat
  • Accessory / Camper Cover Light
  • Accessory / Cigarette Lighter
  • Accessory / Four Wheel Drive Switch
  • Backup Lights
  • Brake Lights
  • Charging
  • Cruise Control
  • Dome and Courtesy Lights
  • Electric Choke
  • Electric Fuel Pump
  • Emergency Flashers
  • Fan Relay Activation Power
  • Fused Power Source
  • Headlights
  • Horn (Relay)
  • Ignition Coil
  • Instrument Panel Lighting and Gauges (Brake Warning Light, 4-Wheel Drive Light, Fuel Gauge, Oil Gauge, Speakers, Tachometer, Temp. Gauge)
  • Park Lights
  • Power Door Locks
  • Power Windows
  • Radio/Clock (Constant and Switched) (Brake Warning Light, 4-Wheel Drive Light, Fuel Gauge, Oil Gauge, Speakers, Tachometer, Temp. Gauge)
  • Starting
  • Tail Lights
  • Third Brake Light
  • Turn Signals
  • Wipers and Washer Pump

Application

  • 1973-1987 Chevrolet or GMC Pickup, Blazer, Suburban

     

Charts

Specs

Application/Specs:

  • Number of Circuits: 27 Circuits - 18 Fuses w/ Horn Relay & Maxi Fuse
  • Harness Length: Factory Fitment
  • Fuse Type: Blade & Maxi Fuse
  • Firewall Pass through: Bulkhead Connector
  • Color Code Based: Factory GM
  • Circuit Designations: Printed on Wires
  • Year: 1973 - 1987 
  • Make: Chevrolet or GMC
  • Model: C & K Truck/SUV
  • Engine: Non Fuel Injected
  • Transmission: Non Electronic

Specifications

KEY SPECS
MFG. Part #20205
BrandPainless Wiring
GENERAL
Number of Circuits27
Fuse Block IncludedYes
Compatible with GM ColumnYes
Ignition Key LocationColumn
Fuse StyleATO/ATC
Sold in QuantityKit
NotesIncludes wiring harnesses, all connectors, brackets, flashers, and zip ties.
GTIN Code749823102057
Harness LengthStandard