Kustom Products is THE go to specialist when it comes to Engine Conversion Harnesses and Transmission Conversion Harnesses.  Our Engine Swap Harnesses include a Detroit Conversion Harness, a Caterpillar Conversion Harness, and a Cummins Conversion Harness.  The Kustom Engine Swap Wiring Harnesses are complete Custom Engine Harnesses that include everything from the ECM Wiring Harness to Engine Adapters and Adaptor Harnesses to Dash Harnesses.  Our Transmission Swap Harnesses include an Allison Conversion Harness and a Fuller Conversion Harness.  We can Swap Transmissions from a Manual Transmission to an Automatic Transmission or visa versa.  These Automatic Manual Transmission Swaps are made simple with our complete Transmission Wiring Harnesses. If you are considering an Engine Upgrade or Engine Conversion or considering a Transmission Upgrade or Transmission Conversion, take a look at the Kustom Products Custom Conversion Harnesses.