Subaru Harness Merging

"Subaru made it bolt right up, iWire makes it plug right in."

You'll send us the body wiring harnesses from your car and the car that matches the engine you plan to use. We'll send you back a custom plug and play harness that keeps the amenities of your car while adding features from your new engine and matching factory ECU. 

Harness Pictures and Reviews

Have a question about your build? Looking for custom work? Want to know more about pricing for your project?

Contact Us! 

Harness Merge Pricing

Our pricing is based on the engine choice for your swap.

To find your base price pick which engine you are using below. 

Into 93-07 Impreza/Legacy (except 05+)/Forester/Baja Chassis

​JDM/EDM V1-6 (1993-2000) - $700 


JDM/EDM V7 and Up (2001+) - $730


USDM WRX (2002-2005) - $730

USDM WRX (2006-2007) - $800

USDM STi (2004–2007) - $800

Forester XT (2004-2008) - $800

6 Cylinder Swap - Click Here

2008+ Engines - Contact Us for Price


- 2008+ Engines use CANbus - click here to learn more.

- $100 additional for RHD to RHD swaps

- $85 additional for swaps with an OBD2 engine in an OBD1 chassis

- $85 additional for merges into 2002+ chassis

Turn Around Time

Standard turnaround time is subject to change based on the volume of rush fees, but 4-6 weeks can be expected for non rushed orders. Please let us know your project time frame and we will do our best to work with you.

Rush Fee - $200 (About 1 week turnaround)

All of our Harnesses are Quality Checked before being shipped and are covered by our Lifetime Warranty. Click here for full warranty


Wiring Options

  • Add in AVCS Bulkhead Wiring - $200 (Only for USDM 2.0 WRX harness, running 2001+ JDM STi) Price Includes iWire AVCS Wiring Kit and labor to install.

  • Cruise Control for DBW Cars - $200 Non DBW cars will reuse factory setup (cable-throttle vehicles include cruise control by default)

  • Auto to Manual (As part of a merge) - $200

  • Cluster swap - $180

Recommended Accessories

  • Cobb Accessport - $650

    • Inquire about package deals 

    • Other COBB products we carry include boost controller, downpipe, heatshield, SF intake, SF intake with airbox, and uppipe. Visit our online store for product details and price.


  • DCCD via a DCCDPro

    • DCCDPro Manual Controller - $219

    • DCCDPro Spiider Auto/Manual Controller No Cluster - $395

    • DCCDPro Spiider Auto/Manual Controller With Cluster - $460

    • DCCD Roller Switch ($99) and Auto/Manual Button ($59) - $140 for the pair

    • DCCD Plug and Play Kits - $149.99. See our options here.

    • Vehicle Speed Sensor Extension Harness -       $34.99

  • V1-6 Factory DCCD (this is manual only) - $180

iWIre Logo with Wording 2 - USE.jpg




Mon - Fri: 9am - 5pm PST


iWire is here to simplify your Subaru powered project, big or small. Focus on the mechanical aspects and we'll take care of the wiring headaches for you.

Lake Forest, CA





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