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Collection: ECU Extension Harnesses

An extension harness will allow you to tap into your ECU wiring for sensor readings, etc. without splicing into the vehicle's factory wiring.  HA Motorsports harnesses are constructed using cross-linked automotive TXL wire that exceeds OEM specifications and is extremely durable.  All HA Motorsports wire harnesses are designed and built right here in the USA!
7 products
  • OBD2B Extension Harness - Manual Transmission
    OBD2B Extension Harness - Manual Transmission - HA Motorsports
    Regular price
    $149.00
    Sale price
    $149.00
    Unit price
    per 
  • OBD2B Extension Harness - Automatic Transmission
    OBD2B Extension Harness - Automatic Transmission - HA Motorsports
    Regular price
    $179.00
    Sale price
    $179.00
    Unit price
    per 
  • OBD2A Extension Harness - Manual Transmission
    OBD2A Extension Harness - Manual Transmission - HA Motorsports
    Regular price
    $149.00
    Sale price
    $149.00
    Unit price
    per 
  • 02-06 RSX 48 Inch Extension Harness - Manual Transmission
    02-06 RSX 48 Inch Extension Harness - Manual Transmission - HA Motorsports
    Regular price
    $229.00
    Sale price
    $229.00
    Unit price
    per 
  • OBD1 Extension Harness - Manual or Auotmatic Transmission
    OBD1 Extension Harness - Manual or Auotmatic Transmission - HA Motorsports
    Regular price
    $95.00
    Sale price
    $95.00
    Unit price
    per 
  • Extension Harness 02-06 Acura RSX, 01-05 Civic, Acura CL, TL - Manual Transmission
    Extension Harness 02-06 Acura RSX - Manual Transmission - HA Motorsports
    Regular price
    $159.00
    Sale price
    $159.00
    Unit price
    per 
  • OBD2A Extension Harness - Automatic Transmission
    OBD2A Extension Harness - Automatic Transmission - HA Motorsports
    Regular price
    $179.00
    Sale price
    $179.00
    Unit price
    per 

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