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ERD Powertrain
CPC4 Harness Repair Kit
CPC4 Harness Repair Kit
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CPC4 / CPC2 Harness Repair Kit – OEM Wiring Connector Replacement for Cut or Stolen Modules
Need a CPC4 Marking Template?
Purchase here: https://erd-powertrain.com/products/cpc4-wiring-marking-for-repair
Repair Your Cut or Stolen CPC4 / CPC2 Harness the Right Way
If your CPC4 or CPC2 module was stolen and your OEM harness was cut with the connectors missing, you’re facing one of the most expensive and frustrating heavy-duty truck electrical repairs.
Replacement CPC connectors are hard to find. Complete harness replacements are extremely costly. Downtime means lost revenue.
That’s why we engineered this CPC4 / CPC2 Harness Repair Kit — a complete OEM-style wiring repair solution designed specifically for heavy-duty trucks needing CPC connector replacement after theft or harness damage.
This kit provides the connectors, pre-crimped terminals, and documentation you need to professionally rebuild your factory harness and get your truck back on the road.
Designed For:
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CPC/2/4 harness repair
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CPC/2/4 connectors replacement
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Cut OEM harness repair
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Stolen CPC module wiring repairs
(Compatible with trucks using CPC, CPC2, or CPC4 modules. Always verify your specific application.)
What’s Included in the CPC Harness Repair Kit
4 OEM-Style for CPC/2/4 Connectors
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1 White connector
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1 Grey connector
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1 Brown connector
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1 Blue connector
33 Pre-Crimped 18AWG Wires
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12-inch wire leads
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Correct CPC terminals professionally crimped
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Pre-stripped and ready for splicing
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More than enough wires for any CPC application (extras included)
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Wire color may vary
Documentation Included
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CPC4 Pin out Reference
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CPC2 Pin out Reference
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Detailed step-by-step connector population and splicing instructions
Why Choose This CPC4 / CPC2 Repair Kit?
✔ Avoid full OEM harness replacement
✔ Save thousands in dealership repair costs
✔ Restore factory-style connector integrity
✔ Designed specifically for theft-related CPC harness damage
✔ Extra terminals included to ensure full coverage
This kit is built for truck owners, diesel technicians, and repair shops who need a reliable CPC wiring repair solution without replacing the entire harness assembly.
Installation Requirements (Important)
This repair requires:
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Ability to trace OEM wiring
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Understanding of heavy-duty truck electrical systems
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Proper splicing and sealing techniques
Because truck configurations vary by year, model, and engine platform, you must determine which harness wire corresponds to each connector cavity.
If you are not comfortable tracing and verifying circuits, we strongly recommend professional installation by a qualified diesel technician.
Disclaimer
Due to wiring variations between trucks, exact pin outs cannot be guaranteed for every application. The installer is responsible for correctly identifying and connecting each circuit. ERD Powertrain is not liable for damage caused by incorrect installation, improper pin population, or miss wiring.
Great customer service product arrived on time and as advertised
ERD Powertrain is an absolute LIFE SAVER!! We've been unfortaunte to experience a handful of break-ins and CPC thefts over past few years. Whenever the unfortunate strikes, ERD is and has been the go-to each and every time! Quality parts coupled with detailed pinout instructions make getting our tractors back on the road a breeze! 100/10!!!!
Fast shipping, and great product.
Good quality products!
Very good

Great customer service product arrived on time and as advertised
ERD Powertrain is an absolute LIFE SAVER!! We've been unfortaunte to experience a handful of break-ins and CPC thefts over past few years. Whenever the unfortunate strikes, ERD is and has been the go-to each and every time! Quality parts coupled with detailed pinout instructions make getting our tractors back on the road a breeze! 100/10!!!!
Fast shipping, and great product.
Good quality products!
Very good