Power Distribution

Electronic interface when completing an engine conversion in heavy-duty Class 8 trucks doesn't stop and start with an engine-to-cab harness—leaving the new Caterpillar, Cummins, or Detroit Diesel powertrain without proper distribution of power and ground between the engine and cab—leading to voltage issues, dead batteries, or ABS/dash communication failures. Kustom Truck Parts offers conversion-specific power distribution kits designed for Kenworth and Peterbilt chassis with NAMUX-series electronics, providing the complete electrical backbone for seamless engine swaps.

Our lineup includes: 

  • Full Power distribution kits, chassis specific
  • Individual Harnesses like Charge/Start harnesses, ground systems, fuse harnesses and power adapters
  • Battery Cable Kits

These kits ensure stable voltage delivery, no dropouts, and full chassis communication.

Browse below for your chassis, NAMUX generation, and battery box configuration. Pair with our engine harnesses, transmission harnesses, or adapters for complete electrical integration. Need help verifying length, NAMUX compatibility, or kit components? Contact our team for expert guidance on your build.