Year Make Model | Painless Performance
Made in the USA
Opening at 8AM CDT
25 Circuit Classic-Plus Customizable 1969-74 GM Muscle Car Chassis Harness By Painless Performance
Made In USA
 P/N 20102
25 Circuit Classic-Plus Customizable 1969-74 GM Muscle Car Chassis Harness



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  • App
  • Specs

Looking for connectors to be included as well as a newly updated design? Check out the PRO Series Harness! CLICK HERE

This 25 circuit harness was designed to fit 1969-1974 GM muscle cars. This harness features a pre-wired factory style bulkhead connector that plugs directly into the back of the fuse block in the factory location. Factory original quick connect terminals are included for the in dash printed circuit board.  Pre-terminated plugs for a column mounted ignition switch, dimmer switch, headlights & headlight switch, blower motor, wiper motor, and turn signal switch. Included with this harness you'll also find a detailed manual and each wire is custom printed with the circuit identification as well as using GM color codes for easy installation. 

Replacement Engine Harness

11 circuit for underhood section of Painless GM chassis harness 20102.Does
not include the bulkhead connector. Note:Will not fit factory GM harness.
21001 - only for 20102

Click the image for more info

 

 

 

 

 

WarningProp 65 Warning
Hazardous Material Warning

Warning
WARNING: This product can expose you to chemicals including lead which is known to the State of California to cause cancer or birth defects or other reproductive harm. For more information, visit www.P65warnings.ca.gov.

Link to P/N: https://www.painlessperformance.com/wc/20102
Engine: Carbureted or Any Stand Alone Fuel Injection
Trans.: Any

Number of Circuits: 25 Circuits - 18 Fuses w/ Horn Relay & Maxi Fuse
Harness Length: Factory Fitment
Fuse Type: Blade & Maxi Fuse
Firewall Passthrough: Bulkhead Connector
Color Code Based:  Factory GM
Circuit Designations: Printed on Wires


Connections Included:

Ignition switch, dimmer switch, headlight switch, blower motor, wiper motor and turn signal switch, 10SI & 12 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.

This harness includes circuits for:

  1. A/C & Heat
  2. Accessory / Cigarette Lighter
  3. Accessory / Trunk Light 
  4. Backup Lights
  5. Brake Lights
  6. Charging
  7. Dome and Courtesy Lights
  8. Electric Choke
  9. Electric Fuel Pump
  10. Emergency Flashers
  11. Fan Relay Activation Power
  12. Fused Power Source
  13. Headlights
  14. Horn (Relay)
  15. Ignition Coil
  16. Instrument Panel Lighting and Gauges*
  17. Park Lights
  18. Power Door Locks
  19. Power Windows
  20. Radio/Clock (Constant and Switched)*
  21. Starting
  22. Tail Lights and License Plate Light
  23. Third Brake Light
  24. Turn Signals
  25. Wipers and Washer Pump

* Including Wires For:
Cigarette Lighter Light
Brake Warning Light
Fuel Gauge
Generator Light
Oil Gauge
Speakers
Tachometer
Temperature Gauge
Voltmeter