Year Make Model | Painless Performance
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21 Circuit Customizable 1966-76 Mopar Chassis Harness By Painless Performance
Made In USA
P/N 10127 $574.99
21 Circuit Customizable 1966-76 Mopar Chassis Harness



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This 21 Circuit Customizable Mopar Chassis Harness part number 10127; is designed for the Mopar enthusiast who wants to maintain the “Mopar Color Code” throughout their classic Chrysler, Dodge and Plymouth vehicles; yet update their wiring system with blade-style fuses and our unique, covered micro-fuse block that is extra compact for easy mounting. Each wire is custom printed with the circuit identification as well as featuring an auxiliary circuit with a 20 amp relay prewired in to the harness for accessories such as fog lights or an electric fuel pump. Each wire is printed with the circuit identification, as well as using Mopar color codes for easy installation. 

This harness DOES NOT include that troublesome bulkhead connector that most Mopar vehicles came with throughout the 1960’s and 1970’s. The circuit that is known for burning up was the Ammeter circuit going through the firewall bulkhead. SO, to solve this problem Painless DOES NOT support the Ammeter on these vehicle AND we provide you with a 3.5” by 3.5” black powder coated plate to cover up the original bulkhead hole in the firewall.



WarningProp 65 Warning
Hazardous Material 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

Link to P/N:
Make: Chrysler, Dodge, Plymouth, Mopar
Model: Universal
Engine: Carbureted or Any Stand Alone Fuel Injection
Trans.: Any

Number of Circuits: 21 Circuits - 12 Fuses w/ Horn Relay, Accessory Relay and Maxi Fuse
Harness Length: Universal
Fuse Type: Mini Blade & Maxi Fuse
Firewall Passthrough: Multiple Grommet
Color Code Based:  Factory Chrysler
Circuit Designations: Printed on Wires

This harness includes circuits for:

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

* Including Wires For:
Fuel Gauge
Gear Indicator Light
Oil Gauge
Temperature Gauge