UZEXT Zebra Instruments Main Harness Extension or Replacement 24" for use with UZ-1 System - This product can be used in two different ways: As a 24" Extension of the UZ-1's main harness, making it a little easier to access those hard-to-reach motors, or As a replacement for the UZ-1's main harness, in case the original one was damaged or cut by a blower wheel, etc.