Power Adapter Harness for Peterbilt trucks with NAMUX3 chassis electronics.
This direct-fit adapter harness connects the J142 breakout on the Kustom Truck engine control harness to the OEM pigtail at the chassis load center. It is commonly used when replacing a Cummins engine (which draws fused ECM power from the chassis load center) with a Caterpillar, Cummins, or Detroit engine, ensuring reliable ECM power delivery and full dash functionality.
Kit Includes:
- (1) Power Adapter Harness
Compatibility:
- Peterbilt trucks with NAMUX3 chassis electronics (typically 2011 and newer)
- Peterbilt class 8 models including 389, 388, 367, and others
Important Notes:
- This harness is only compatible with Peterbilt NAMUX3 chassis electronics.
- If you are not certain of your chassis electronics, contact Kustom Truck for verification.
- Provide the last 6 digits of your chassis VIN when ordering.
Key Specifications:
- Connects J142 breakout to chassis load center pigtail
- Ensures reliable fused ECM power delivery
- Ideal for Cummins engine repowers and other engine swaps
1 year
