2.0 WRX and 2.0 STi Bulkhead Project Harness


SKU: PR-BTHR001 iWire Services

Available Now!

Safe & Secure

We've made it simple to toss that old beat up bulkhead harness for your 2.0L WRX or 2.0L STi platform project in the trash.

Not just a used harness freshened up.
We've built this harness with all new components from connectors, wire, and even upgraded sleeving. We adjusted lengths to make any installation application straightforward and tidy.

Let us supply the harness for your turbo engine swap project.
Instead of sending in a used harness that likely has seen better days, iWire will supply the harness for the cleanest and most reliable harness to merge to your non-turbo bulkhead harness. For those who choose to have iWire supply the harness for their swap, we discount the price to $499.99 ($200 savings!) plus the labor cost of the harness merge. If you are looking to do a Subaru non-turbo to turbo swap, please click here to start that process.

Are you working on a Bug, Sandrail, Vanagon, or Porsche project?
The project harness is a great starting point for those with wiring experience. You'll need to wire this harness to your fusing choice and connect it to the chassis wiring. We include the diagrams for the harness, but it does not come with step-by-step instructions. If you want something more turn-key, please look at our iWire Standard Harness by clicking here.

Full Walkthrough of the Project Harness

Compatible Engines
2002-2005 USDM WRX (EJ205 without AVCS)
2001-2006 JDM WRX (EJ205 with AVCS)
2001-2006 JDM STi (EJ207 with AVCS)

Click here if your not sure if your engine will work with our harness.

Click here if you also need the engine harness replaced.

Fitment Notes



This is not a replacement for a damaged complete OEM harness (IE 2002 WRX that needs a new bulkhead harness) since the project harness only includes the critical ECU to engine wiring. The OEM harness would integrate the body wiring along with the ECU to engine wiring into a single harness.

Suggested Uses

Subaru into Vanagon
Subaru into Bug
Subaru into Porsche
Subaru into Kit Car
Subaru into Dune Buggy

This kit is designed to modify the electrical systems in your vehicle. Working around electricity can be dangerous and even deadly if proper care is not taken. While iWire takes pride in making our products as simple as possible to use, we still recommend that a professional, qualified technician perform the installation. Any modification to a vehicle that exceeds the original manufacturer's specifications carries an inherent risk of mechanical failure that could result in damage to life or property. iWire is not responsible or liable for any damages that may occur. THIS PRODUCT IS NON-RETURNABLE. By purchasing this product, you agree to these terms of sale.