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Friday 11/24/2017
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21 Circuit Classic Customizable Muscle Car Harness By Painless Performance

P/N 20103

21 Circuit Classic Customizable Muscle Car Harness

GM Column IgnitionIn Dash Ignition
       
 

  • Application
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Year: Universal
Make: Universal
Model: Universal
Engine: Carbureted or Any Stand Alone Fuel Injection
Trans.: Any
American Made

 

This harness is formerly known as our 12 circuit kit. Click here to read about the recent changes.

This 21 circuit kit is adaptable to fit the 1960's, 70s, or 80s GM, Ford, and Chrysler muscle cars where a bulkhead connector is required. Some minor bulkhead modification may be required. Please be sure to check out all of our harnesses in this section, as we may have an offering for a more direct fit harness for your vehicle. Included with this harness are the following parts; GM turn signal & column mounted ignition switch connectors; pre wire plugs for the headlights & dimmer switch; and each wire is custom printed with the circuit identification as well as using GM color codes for easy installation. 

Ground Strap KitPowerBraid and Dressup Accessories Link

 

Number of Circuits: 21 Circuits - 12 Fuses w/ Horn Relay and Maxi Fuse
Harness Length: Universal
Fuse Type: Blade & Maxi Fuse
Firewall Passthrough: Bulkhead Connector
Color Code Based: Universal
Circuit Designations: Printed on Wires

This harness includes circuits for:

  1. A/C & Heat
  2. Accessory
  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
  19. Third Brake Light
  20. Turn Signals
  21. Wipers

* Including Wires For:
Fuel Gauge
Oil Gauge
Tachometer
Temperature Gauge
Voltmeter

 21 Circuit Classic Customizable Muscle Car Harness By Painless Performance

 

 

ECM Flash Program

 

 

This is a basic start and run tune that we only recommend for a near stock application. We will only change the following parameters: delete VATS/PASS-KEY security, cooling fan on/off temperatures, rear end gear ratio, tire size, speed limiter, rpm limiter, idle rpm, and we will adjust the check engine light parameters. If your setup requires any other parameters tuned you will need to locate a local tuner. All ECMs are left unlocked to allow easy access for your tuner.

Step 1: Purchase one of the qualifying part numbers. See below for that list.


Step 2: If your part number is highlighted RED proceed to step 3B. If your part number is highlighted BLACK, proceed to step 3A.


Step 3A: If you have arrived at this step, your harness does not come with an ECM and you must provide one to be flashed. Please reference the manual with your harness to confirm the ECM part number required.


Step 4A: Once you have received your harness, please cut the Barcode label from the box as shown in the picture below.


Step 5A: Package and mail your ECM along with the Barcode label, a copy of your purchase receipt, and your ECM form that you are about to complete. (The address will be provided after you complete the form). We will pay for return ground shipping*. If you request a faster service, you will need to provide a return label.


Step 3B: If you have arrived at this step, your purchase comes with an ECM. You must fill out our ECM form BEFORE your purchase will ship. Proceed to Step 6.


Step 6: Click the “Start Here” button below to fill out our ECM questionnaire.


Step 7: Once we have the ECM, we will use the data from the form to flash the ECM. Then, once it has been flashed we will package the ECM and ship it back to you. If we encounter a question, we will contact you. This process can take 1-3 days.


Step 8: Once you receive your ECM, it is ready to go.

 

*Note: Our free return shipping is ONLY good for the lower 48 states, via ground UPS. If you are outside of those states, you must provide a return shipping label with your order. If your purchase comes with an ECM, the shipping will be covered via the retailer you purchased from.

 

 

Click the Start Here button below to get your FREE ECM Flash!

Click Here To Start The ECM Reflash Process

 

End Panel


APPLICABLE PAINLESS PART NUMBERS

60008

   

60522

60009

   

60523

60017

   

60524

60026

   

60526

60217

   

60608

60218

   

60617

60221

   

60700

60508

   

60701

60509

   

60702

60520

   

60710