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15 Circuit Customizable Extreme Off-Road Harness By Painless Performance

P/N 10144

15 Circuit Customizable Extreme Off-Road Harness


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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 10 circuit kit. Click here to read about the recent changes.

Wire a rock crawler, or even a basic off road vehicle with this 15 circuit extreme off road harness.  Designed around our custom 10 fuse/4 relay weatherproof fuse block this harness provides all the wiring and amperage handling any off road vehicle could need.  This completely customizable harness provides 10 fuses, two 40 Amp relays perfect for operating an electric cooling fan or fuel injection harness; and two 20 Amp relays perfect for operating lights, electric fuel pump or water pump.  Parts kit includes heat-shrinkable crimp terminals, maxi-fuse, circuit breakers, zip ties, junction block and fuse block mounting bracket.



Number of Circuits: 10 Fuses w/ Two 40 Amp & Two 20 Amp Relays
Harness Length: Universal
Fuse Type: Mini Blade
Firewall Passthrough: Grommet
Color Code Based: Universal
Circuit Designations: Printed on Wires

This harness includes circuits for:

  1. Accessory Relay #1
  2. Accessory Relay #2
  3. Accessory Relay #3
  4. Accessory Relay #4
  5. Fuse 1
  6. Fuse 2
  7. Fuse 3
  8. Fuse 4
  9. Fuse 5
  10. Fuse 6
  11. Fuse 7
  12. Fuse 8
  13. Fuse 9
  14. Fuse 10
  15. Fused Power Source

Two 30 Amp ATC Fuses
Four 20 Amp ATC Fuses
Four 15 Amp ATC Fuses
Four 10 Amp ATC Fuses
Two 5 Amp ATC Fuses
Two 40 Amp Relays
Two 20 Amp Relays
70 Amp Maxi Fuse

 15 Circuit Customizable Extreme Off-Road 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


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