If the plan is to do only one of these, don't practice on your own car. Ok so I am swapping in a Wrx EJ205, I contaced Iwire to merge the wrx harness to my legacy harness. The difficulty is getting the fit and finish right which takes experience. In the video we use a 2000 RS with a 2003 WRX Swap which is an example for 1998-2001 Imprezas, 1998-2001 Foresters, and 2002-2005 WRX Subarus. In addition, the wiring requirements can change between car models and years so there may not be the right type of wire (e.g. Offline jakeachy BANNED. If someone comes to us with two modified harness, most likely it will require replacing them both and replacements are are tougher to come by every day. Options for Merging a Wiring Harness in your Subaru Swap. Wiring harnesses in a Subaru are a bit different than other car manufacturers. The point of a harness merge is to modify the parts of the original harness that no longer match for the new ECU and engine. iWire's Subaru Wiring Harness Installation Video Guide, You asked so we delivered. Focus on the mechanical aspects and we'll take care of the wiring headaches for you. Generally this means not only putting in the entire harness from headlights to taillights that matches the new ECU and engine in the car, but also the dash that goes with it. If you could only see the messes that have come through here and we've had to fix. Focus on the mechanical aspects and we'll take care of the wiring headaches for you. 1999/2000/2001 RS Swap to WRX or STI (Help me add notes!) 3:37. ECUs, with almost no exception, are not interchangeable if the model and year of the car do not match so the new ECU will need to be wired in one way or another. I was glad that I listened to other reviews saying the harness was a must-have addition to the horns and bracket. 9:41 . Below is our Video Install Guide on how to install your Subaru wiring harness (wiring loom) in your Subaru. This ends up being more expensive and delays the project even further because more time is spent to fix/repair a harness than to just start fresh with two unmodified harnesses. Without Swapping the Dash In this video we cover the engine bay plugs. Hella horns wire harness Subaru wrx. iWire is here to simplify your Subaru powered project, big or small. How much wiring from a wrx do I need? Subaru Harness Merging "Subaru made it bolt right up, iWire makes it plug right in." Outputs will be modified to interface with the VW instruments if required. Although it would be possible to put the entire harness that matches the new ECU and engine without swapping the dash, we would definitely not recommend it. Offline curly2k3 Well-Known Member. Note: This would also include patch harnesses because the same problems of wire types and quantity of wires needed are not solved with this. Over the years people have tried various ways to do it which we will explain in more detail below. This is the message I got from them (they seem to be an excellent company to do business with!). With Subaru, it’s all one harness so there is no way to unplug the section that needs to change. If you are doing your own DIY swap you can purchase replacement parts here -, https://www.iwireservices.com/online-store. There are a few ways to get the new ECU wired in, but we recommend a wiring harness merge between the two different bulkhead harnesses (the one from the original chassis and the one that matches the new engine) where iWire will combine the two harnesses into a single plug and play harness. Learn the basics of how to install your Subaru wiring harness from iWire. The actually mechanical swap is pretty straight forward, but the wiring will drive most people nuts and it takes a good 10 hours to do, even if you know what your doing. 3 … Likes Received: 0 Trophy Points: 0. Wiring harnesses in a Subaru are a bit different than other car manufacturers. Final merged harness:-----My original question for this thread: I’m in need of help with this part of the conversion. If you are doing your own DIY swap you can purchase replacement parts here - https://www.iwireservices.com/online-store, Part 1 - laying out your harness and engine bay plugs, Part 2.5 - running the front harness through the fender, Part 3 - wiring in your fuel pump controller. When installing a different type of engine (e.g. Also just a tip if you go DIY – it’s not just about matching the same colors together (Subaru uses the same color twice for different things), or the ability to solder/crimp wires together as those things are pretty simple. In the video we use a 2000 RS with a 2003 WRX Swap which is an example for 1998-2001 Imprezas, 1998-2001 Foresters, and 2002-2005 WRX Subarus. This means that we are not modifying any of the critical and easily damaged wiring for sensors like crank and cam position. 2002 Forester S … You'll send us the body wiring harnesses from your car and the car that matches the engine you plan to use. What Do I Need to Send For My Swap? These are simple circuits that are not nearly as sensitive to being cut and spliced back together. anyone know how to merge a harness? I was told we share the same kind of harness from one of these years. Another reason we wouldn’t recommend it is because we’ve had customers who have tried to do it themselves and end up getting stuck halfway due to lack of time, knowledge, money, a previous wiring error, or any combination of those issues. How about a DIY 2.0 WRX or 2.0 JDM STi powered Sandrail, Bug, Vanagon, or Porsche? Generally this means not only putting in the entire harness from headlights to taillights that matches the new ECU and engine in the car, but also the dash that goes with it. Simply plug the harness back in and all of the body functions will work just they as did before the swap. Can someone send me in the right direction for my harness merge? Below is our Video Install Guide on how to install your Subaru wiring harness (wiring loom) in your Subaru. Below is our Video Install Guide on how to install your Subaru wiring harness (wiring loom) in your Subaru. ... A forum community dedicated to Subaru Impreza GC8 and RS owners and enthusiasts. It adds to the work because it means the ONLY thing that works is the engine and every single other system (including HVAC) would need to be wired in. Full Forum Listing . I'm doing a RS to WRX swap, and I would like to get the harness done by someone who knows how to merge it correctly. BUSARU 16,924 views. Click here to read our full write up on the pros and cons of doing a dash swap. iWire is here to simplify your Subaru powered project, big or small. WRX uses a 3 wire IACV while RS uses a 6 wire IACV). The problem with this method is that now every wire going to the engine has been cut twice (once at the ECU and once at each plug going to the engine). Subaru wiring is a nightmare. Schematics Diagram And Wiring Harness Subaru Impreza Electrical Schematics Diagram And Wiring Harness If you ally dependence such a referred subaru impreza electrical schematics diagram and wiring harness books that will offer you worth, get the unconditionally best seller from us currently from several preferred authors. 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. Ben 2nd Dec 2019. iWire products are proudly Made in America. In the merge manual at northursalia.com the “CONNECT TO” part isn’t clear to me or I’m just over-thinking it but either way it’s annoying me. Case by Case Option - Swapping the entire harness. Explore Our Forums. Brian's Adventures 12,706 views. In the video we use a 2000 RS with a 2003 WRX Swap which is an example for 1998-2001 Imprezas, 1998-2001 Foresters, and 2002-2005 WRX Subarus. … With Honda and Toyota swaps, the original wiring from the ECU to the engine can be simply unplugged and replaced (think product) with a custom adapter. Instead we take the entire sub harness from the ECU out to the engine that matches the new engine and surgically install that into the original harness. What we do splice are the wires that connect the ECU to engine wiring to the body for things like the check engine light, fuel level, power, ground, radiator fan triggers, etc. So guaranteed the first go around is not going to be pretty. The rule of thumb is the harness in the car must match the dash going in the car. Likes Received: … NA to turbo) into a Subaru chassis, the Engine Control Unit (ECU) also needs to be swapped in to get the engine running correctly. M12 Hex Flange Bolt Wiring Harness x1 OF x1 L101SAN000 SUBARU OF AMERICA 3 1/28/2020 2 PAGE 25 NA - Exhast Gasket PART NUMBER ISSUE DATE Cable Tie Mount x1 x2 M Turbo - Exhaust Gasket x1 KIT CONTENTS: A C x1 D x14 E x2 H I x3 O Bumper Trim L Foam Tape K B x6 F Flat Washer x1 x1 RECEIVER PLUG G Cable Tie - 8" Cable Tie - 18" x2 x2 N J. Also aside from everything under the wrx hood, what else do I need? This Harness Made the Install a Breeze. You asked so we delivered. Any non required features (typically other circuits which interfaced with the engine ECU in the Subaru) will be insulated and identified in the harness near the ECU, and hidden in the conduit, just in case they should ever be needed. This means the only option is to surgically remove the section of harness that is no longer needed and replace it with the ECU to engine section that matches the new parts which requires removing the dash and entire harness from the car (think service). NA to turbo) into a Subaru chassis, the Engine Control Unit (ECU) also needs to be swapped in to get the engine running correctly. shielded wire), right gauge of wire (e.g. iWire products are proudly Made in America. This method has been used by those who don't want to pull the dash. As mentioned above, we don't want to cut and splice all of the wiring going direct from the ECU to engine because it leads to trouble. Best Option - Harness Merge If you are doing your own DIY swap you can purchase replacement parts here - While we don’t recommend going this route as it tends to be more work with a lower quality outcome than a harness merge, it is doable and does get the car running. This is not ideal because now there are multiple places that could be wired incorrectly or fail over time. Unlike Toyota or Honda, the wiring from the ECU to the engine in a Subaru is not a separate harness. jakeachy, Jan 28, 2008 #1. In addition to our quality work that comes with a warranty, you get our customer service which our reviews can attest to is top notch. I am starting to get a little confused. This method ends up being more time consuming, unreliable, and will most likely create more problems than solve. While many people have successfully done a wiring merge in their garage or shop we don’t recommend it. The other upside of the harness merge over the complete harness swap (with or without also swapping the dash) is that all of the basic functions of the chassis like doors, headlights, taillights, AC, etc all work just like they do from the factory. anybody? Subaru Harness Pull - Wiring Harness Series - Duration: 9:41. Planning on a USDM 2.0 WRX or 2.0 JDM AVCS Equipped WRX or STi engine swap? Subaru Forester (SF) EJ25 Engine Swap - Duration: 3:37. A note (fine...a lecture) about DIY harness merges. - Subaru Impreza GC8 & RS Forum & Community: RS25.com Does my 2002 Forester have the same harness pin location as a 1999/2000/2001 RS or is it like a 1998 RS? At iWire we’ve done thousands of wiring projects which gives us the experience to know the nuances between each model and how to get things to fit as seamlessly as possible and work reliably. Then you'll want to start with this ECU to engine harness. Don't bother with stripping down an old harness, let us a give you a jump start with something brand new! For those who decide to go the DIY route, please make sure you are 100% certain the project can be finished before cutting a single wire! I am retaining my original legacy transmission. 18 AWG vs 14 AWG), or the right number of wires (e.g. Compatible Engines:2002-2005 USDM WRX (EJ205 without AVCS)2001-2006 … OF Phillips head screwdriver DATE device. Worst Option - Splicing the harness in the car at the ECU and at the engine. Subaru Harness Merging "Subaru made it bolt right up, iWire makes it plug right in." Discussion in 'Modifications And Maintenance' started by jakeachy, Jan 28, 2008. There are a few ways to get the new ECU wired in, but we recommend a wiring harness merge between the two different bulkhead harnesses (the one from the original chassis and the one that matches the new engine) where iWire will combine the two harnesses into a single plug and play harness. Whether it’s with iWire or another company, having someone who has successfully completed many merges before is the best way to ensure time is spent enjoying the car, not fixing it. Instead it is integrated with the body wiring in one large harness. Later on down the road if a check engine light comes on it will be very difficult to determine if the cause is mechanical or electrical because of the concerns about the quality of wiring work. $700-$1000 just to merge the wiring harnesses is pretty common. Thanks! 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