Free Shipping on Auto Parts Orders Over $75.                           Order by 11 PM EST for Same Day Shipping!

Painless Performance Products 20102 - Painless GM Car Chassis Harnesses

Painless Performance Products 20102 - Painless GM Car Chassis Harnesses
Painless Performance Products 20102 - Painless GM Car Chassis Harnesses

JEGS Part Number: 764-20102

Universal GM Muscle Car Wiring Harness
  • 1969-74 GM Car
  • 25-Circuit Harness
    • Fits Applications:
    • 1969-1974
    • Click to see All

    Painless Performance Products 20102 Details

    Universal GM Muscle Car Wiring Harness

    Includes: 25 fuses, horn relay, 70 amp Maxi-Fuse, necessary wiring, fuse block mounting bracket, zip ties, grommet, and connectors

    Universal 25 Circuit kit is modified to include custom features to make it easier to wire 1969-1974 GM Muscle Cars (Camaro, Firebird, Nova, Chevelle, Cutlass, GTO, Skylark, and Tempest). A pre-wired factory style bulkhead connector plugs into the fuse block through the firewall in the stock location. Factory original quick connect terminals are included for the in dash printed circuit board. Pre-terminated plugs for the ignition switch, dimmer switch, headlight switch, blower motor, wiper motor and turn signal switch are included.

  • Number of Circuits: 25 Fuses w/ Horn Relay & Maxi Fuse
  • Harness Length: Factory Fitment
  • Fuse Type: Blade & Maxi Fuse
  • Firewall Passthrough: Bulkhead Connector
  • Color Code Based: Factory GM
  • Connectors Included: Ignition switch, dimmer switch, headlight switch, blower motor, wiper motor and turn signal switch, 10SI & 25 SI Alternator, HEI Power and Tach and 20
  • Extra 56 Series Terminals for use with any Factory GM 56 Series Connector such as
  • Headlight Switch, Wiper Switch or A/C Switch/Blower Motor.
  • Circuit Designations: Printed on Wires

    This harness includes circuits for:

  • Headlight Switch- Power to headlight switch. Power wires out of headlight switch to head light dimmer switch, tail lights, dash lights and park lights.
  • Dimmer Switch wires include power from headlight switch and power out to low and high beam headlights.
  • Wiper Switch- Power to wiper switch and the wires between wiper switch and your wiper motor.
  • Turn Signal Switch- Power into and out of your column mounted turn signal switch. Also included in this kit are both styles of GM turn switch connectors. Note: these will connect to most aftermarket and factory steering columns.
  • Heat/AC Switch- Power into switch and wires between switch and blower motor/resistor block.
  • Ignition Switch- Power into and out of to fuse block (ignition, crank and accessory)
  • Brake Switch- Power into and out of brake switch. This includes a third brake light wire.
  • Courtesy Lights- Power and ground circuits for dome light activation.
  • Alternator- Charge wire and alternator field activation wires. (Most alternators can easily be wired up to this Painless harness). Included in kit is a high output alternator wire that allows you to use up to a 140 Amp alternator.
  • Horn- 40 Amp horn relay mounted to fuseblock
  • Radio- Harness includes constant B+ (for preset memory) and ignition hot circuits for any aftermarket or factory radio. Also included are two pairs of speaker wires.
  • Starter- Crank signal wire for starter solenoid.
  • Engine section wires including electric choke, coil power, coil to tach signal, oil pressure, engine temperature, and A/C compressor clutch control wire.
  • Headlight section wires including right and left high and low beam headlights, turn signals and park lights.
  • Tail section wires including tail lights, brake lights, turn signal lights, fuel gauge sender, third brake light, and reverse lights.
  • Dash panel section wires including fuel, temperature, oil pressure, voltage, tachometer, speedometer, high beam and turn indicators and gauge illumination.
  • Door section wires including power windows and locks.
  • Accessory section wires including cruise control, power antenna, electric fuel pump and an cigarette lighter/accessory output.
  • Also included in kit is a fuseblock mounting bracket, rubber grommet, 4-inch zip ties, 70 Amp maxi fuse and a large assortment of crimp style connectors.

  • Painless GM Car Chassis Harnesses

    Painless GM Car Chassis Harnesses replace the old and brittle 30+ year-old wiring found in these cars. These harnesses give you everything you need, plus more, for connecting standard factory components as well as components from the abundant aftermarket that has grown with the popularity of these cars. These harnesses follow all of the same routing found on the factory harness which allows you to utilize the factory harness attachment points. Made in USA.

    JEGS Easy Kits are designed by JEGS high performance racing professionals to help you get all the performance parts you need for your race car, hot rod or truck.

    Painless Performance Products 20102

    25 Circuit
    Circuit Quantity
    Fuse Block Included
    Fuse Block Location
    Fuse Style
    Ignition Key Location
    Sold as a kit
    Harness Length
    Manufacturer's Part Number:
    Easy Kits
    Painless Performance Products 12001 - Painless Universal Fuse Blocks
    Only $52.99

    JEGS Performance Products 32012 - JEGS Thermal Heat Sleeving
    Only $24.99

    JEGS Performance Products 32011 - JEGS Thermal Heat Sleeving
    Only $19.99

    JEGS Performance Products 80569 - JEGS Circuit Tester
    Only $9.99

    See All Items You Need