Installation Guides

Install Guides

iWire Product Help Docs

Find iWire product installation guides, technical documents, videos, and wiring resources for Subaru projects, swaps, fuel systems, DCCD, iVSS, digital dash adapters, and more.

View Product Docs iWire University
Important: If you have any issues or questions while installing our products, please call or email us before touching any wires, including cutting or splicing. Usually, harness alignment is off due to an installation issue, not a manufacturing error. If we made an error, we are always happy to make it right. Please email info@iwireusa.com with any questions.
Before You Cut Stop and Ask Contact iWire before cutting, splicing, depinning, or modifying wires.
Product Docs Guides + Videos Installation documents, Confluence guides, PDFs, and video walkthroughs.
Need More? iWire University Use our blog and YouTube channel for deeper Subaru wiring education.

Start here

Choose the product family or support resource that best matches your project.

1

iDCCD + iVSS

DCCD controller and vehicle speed signal product guides.

View docs →
2

Fuel System

Fuel pump controller hardwire kit and Radium hanger guides.

View docs →
3

Plug and Play

Grounding, battery relocation, wideband, adapters, and more.

View docs →
4

General Help

Crimping, depinning, pigtails, and Subaru wiring basics.

View docs →

Product Help Docs

Current iWire product documentation and installation resources.

Engine Harnesses

Mechanical Parts

Digital Dash Adapters and Alternator Circuit

AVCS Harnesses

Discontinued Products and Services

These documents are retained for legacy support. Some products or services below may no longer be offered.

Merge Help Docs

Standard Harnesses

818 Help Docs

Still need help?

If you are stuck during installation, contact iWire before modifying wiring. Include your order number, product name, vehicle details, and clear photos of the connectors or area you are working on.

Contact iWire