Installation Tech Documents

If you have any issues or questions while installing our products, please call or email us BEFORE touching any of the wires including cutting and splicing. Usually harness alignment is off due to installation error and not manufacturing error. If we did make an error, we are always happy to make it right so please call us with any questions! Check out the iWire Waranty to see if your product is covered. 

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Don't see the answer you need below? Check out the iWire Blog. 

Merge Help Docs

V1-2 Swap Help Document

V3-4 Swap Help Document

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V5-6 Swap Help Document

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USDM 02-05 WRX Help Document

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USDM 04-06 STi Help Document

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USDM 07 WRX and STi Help Document

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iWire Subaru Wiring Harness Install Video

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Fuel Pump Controller Install Guide​

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Commonly Confused Plugs

818 Help Docs

Drive By Wire Engines

Non Drive by Wire Engines

Headlight Accessory Kit Install Document

Product Help Docs

DBW Pedal Adapter Plate Install Video

Mounting Hardware Install Document

Intercooler Splitter Install Document

Fuel Pump Hardwire Kit - 93 to 07

Fuel Pump Hardwire Kit - 08 to 18

FPC Hardwire Kit - Radium Addition - 93-07

FPC Hardwire Kit - Radium Addition - 08-18

FPC Hardwire Kit - Bypass Connector - 08+

AVCS Install Guide

Note: We do not post our AVCS Install Guide online. The link to the instructions are included in each kit. If you lost your instructions, please email us at

DCCDPro with iWire PnP Kit Help Docs

Manual PnP Kit

Spiider PnP Kit - 2002-2005 WRX

Spiider PnP Kit - V1 to V3

Spiider PnP Kit - V5 and V6 RHD

Spiider PnP Kit - 06+ WRX and 07+ STi

Spiider PnP Kit - 04-06 STi

Spiider PnP Kit - 04-05 FXT

General Help Docs

Basic Crimping Guide

Spiider PnP Kit - Baja Turbo

Spiider PnP Kit - STi Cluster 2001-2007

Spiider PnP Kit - V5 and V6 Cluster

DCCD Plug and Play Kit - Wiring Only

DCCDPro.com Initial Setup Guide

FPC Hardwire Kit - Bypass Connector - 08+ V2

Note: This V2 guide is for FPC Hardwire Kits purchased after 9/1/19