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Thread: 5spd swap need wiring?

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    5spd swap need wiring?

    I know that I would need to rewire the entire car for swapping in a new motor, so Im thinking of swapping in another 2.2l with a 5spd. Im aware that Ill need the 5spd ecu but will the wiring change at all?
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    Re: 5spd swap need wiring?

    you actually dont need a 5 speed ECU, in fact i believe that makes your life harder actually. Because then your trying to put a 5 speed ecu into a automatic wired car.
    But the rewiring on a 5 speed swap is extremely simple. I just did it my self, in the last couple weeks, So if you do the swap and get stuck, just PM me, i'll walk ya threw it.
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    Re: 5spd swap need wiring?

    My thing is from what Ive read (at least as far as engine swaps go) I have to pull the entire harness from head to toe unless I wanna cut and splice. I dont have that kind of time, if I put in another 2.2 for now and have to stick with an auto trans I will because Im saving the swap for after I have my 3000gt rolling to have the subie off the road for a week or two. The motor/trans I can have done in a day (service manager is a certified subaru mechanic) I just cant risk having setbacks with wiring
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    Re: 5spd swap need wiring?

    Wont get into motor swap wiring, since thats a huge story off subject. But rewiring for a 5 speed is the least time consuming part of a 5 speed swap. it takes longer/is harder to switch the pedals out than to fix the wiring for the 5 speed. You clip a wire, you move a pin over. you ground a wire, you splice to wires together, and you splice one more set of wires together and you can be off and driving. now that above method will bypass the NSS, so you need to have half a brain when starting your car. and you wont have cruise control, but your car will drive right. wiring in a NSS isnt to much harder, but takes a little more time. then you can keep your cruise, and you'll require the clutch pressed in to start the car.
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    Re: 5spd swap need wiring?

    Okay so its only a little cutting and splicing? I can live with that. I was worried that the ecu was going to be entirely different and need a new harness >.>
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    Re: 5spd swap need wiring?

    naa not at all. very little cutting and splicing to get the car started, and its super easy, i can send ya pictures on a step by step. Then when you have the time, you can go back and change things and start marking off check engine lights. But in the mean time, you'll atleast have a car up and running to get you around town.
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    Re: 5spd swap need wiring?

    I would appreciate the step-by-step
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    Re: 5spd swap need wiring?

    If you had a complete donor car which was the same just a 5mt what wiring would I need to swap to make it like factory? Would I have to pull the dash?
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    Re: 5spd swap need wiring?

    Off the top of my head...

    Engine wiring harness (attached to the intake manifold) and bulkhead harness (yes removal of the dash is required).
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    Re: 5spd swap need wiring?

    Whats different about the engine wiring harness?
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    Re: 5spd swap need wiring?

    AT has the inhibitor switch (gear selector) coming off of it where the MT just has two connectors... one for the reverse lights and one for the neutral switch. AT wiring harness also includes connections for the TCU.

    MT wiring also lacks the FWD fuse wiring.

    I am sure there are a few other small things.
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    Re: 5spd swap need wiring?

    Ok but that stuff shouldnt be part of the intake wiring harness I wouldnt think would it? Is the abs unit different on the 5mt car also? I heard the tcu in the auto cars also control the abs.
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    Re: 5spd swap need wiring?

    what??

    you dont need to remove the dash for any reason related to a 5MT swap.

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    Re: 5spd swap need wiring?

    I want everything working like factory including the abs. Not just a band-aid to get the light to go off. Chime in if you know what all needs to be done.
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    Re: 5spd swap need wiring?

    i followed information in this link almost verbatim, except i went with a plug and play harness i made for the IGN circuit so I could swap back to AT if I ever needed..

    One thing that is different on the '95 as opposed to other years is the at/mt id pin, it's 20 instead of 85 on the ecu pinout

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    Re: 5spd swap need wiring?

    Couchfuzzy im not sure that is all the same for my car though since it is a first gen.

    I decided im just going to mod my auto harness. We really need to make a excellent 5speed swap wiring guide. I might look into doing that after my swap. I havnt found anything in all my searching that tells you what to wire where exactly in a nice detailed write up.

    Im not even sure if I need to swap the VSS over from the auto to the manual.

    I will message Monstar
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    Re: 5spd swap need wiring?

    The guidelines on his link still apply, they may not be exactly the same, but covers the bases.

    You will use the vss that is on the 5mt so it will report correctly to the dash.
    My 1997 Legacy L

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    Re: 5spd swap need wiring?

    I need a good wiring diagram for a 98. It really doesnt seem hard im just trying to find a bit more info. If someone could just say hook this wire to this wire that be awesome lol.

    I thought about cutting the big connector off my auto trans harness and cutting the connectors off the 97 main harness for the trans and making a harness to plug into the factory connectors.

    Im a little confused on where to run the wire for the NSS. This thread talks about it some but not sure why its going through the firewall like he has it.
    http://legacygt.com/forums/showthread.p ... 00680.html

    Need to know what wires to connect the neutral and reverse switches.
    I also want the cruise control to work. ABS I could care less I just dont want the light lit up on the dash.
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    Re: 5spd swap need wiring?

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    Re: 5spd swap need wiring?

    Wow thanks for the link I never seen that one before! Man I cant hardly wait to drive it with a 5MT. Is the wiring the same on the 98 and 99's?
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    Re: 5spd swap need wiring?

    Yes but do you have a 2.5 or a 2.2?
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    Re: 5spd swap need wiring?

    I have a 2.5. Im still trying to figure out a lot of the info in that thread. I understand the first part but once it gets to the cruise and the starter with having to buy the relay I get a bit confused. Not sure why this is such a pain for me to figure out right away. Just trying to piece all the info together.

    The more I read the better it gets
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    Re: 5spd swap need wiring?

    I was in your shoes literally a couple years ago.

    Here is what I will suggest and I am absolutely serious.

    1. Download the full FSM for your car if you havent already. viewtopic.php?f=14&t=20753
    2. Go to the wiring diagram section... the third or fourth PDF down is the FULL wiring diagram for everything on the car. Print off the pages that I linked in that last thread but for your 2.5L. It will say in the upper left corner which engine it is for and there will be multiple diagrams for each system. One for 2.2L, one for 2.2L CA emmissions and one for 2.5L
    Start with one thing at a time. Like the reverse lights. Trace the path of electricity with a pen. Do this for all of them. It will help you visualize what you are actually doing so it doesnt seem so overwhelming. Once you get the concept, it will be easy as hell and you will be super proud of yourself for learning something so foreign.

    Go here:

    viewtopic.php?f=6&t=25046&start=120

    5th page about half way down. He has the ECU wiring instructions for 2.5L with pictures. Past that, you should be able to figure out the other systems like what I linked. The Reverse lights, Starter, Cruise Control and NSS systems are the same between the different engines (even same wire colors) so my instructions (aside from the ECU pin locations) should be exactly what is needed to wire yours up.
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    Re: 5spd swap need wiring?

    Yeh I just printed out all the pages and things are starting to click. You have been the biggest help so far cant thank you enough. I might have to ask you a few questions from time to time if thats ok.
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    Re: 5spd swap need wiring?

    Sounds good. Ask away if needed.
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    Re: 5spd swap need wiring?

    Everything for the cruise is done under the dash right? Near the pedals.

    For the starter it says I need to purchase a relay? Where did you mount the relay?

    Where did you run your ground for the neutral switch on the trans?

    Trying to finish the picture in my head lol. I want to make it a clean install.

    ABS looks easy enough just unplug one of the connectors from the ecu and leave the other plugged in.
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    Re: 5spd swap need wiring?

    yes everything is near the pedals... you will have to make sure your manual pedals have the cruise and neutral switches on the clutch pedal.

    I actually didnt mount the relay... I just tucked it up behind the radio in the center console to the right of the pedals. As for the ground, I just used any old bolt that I found that I could ground too up by the pedal box. I think it is under the hood release but any good grounded bolt or nut should be just fine.
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    Re: 5spd swap need wiring?

    Alright thanks. Cruise didnt work in the donor car hopefully that switch is ok.
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    Re: 5spd swap need wiring?

    I noticed on the ecu directions monstar says to cut pin 80 wire also but doesnt say what to do with it. Im guessing I could just pull the pin out and tape it up.
    Ill prob just use a 3m quick splice connector also for connecting 81 to the ground.

    Pull the wire for 81 from the donor car too so I dont cut any original wires.
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    Re: 5spd swap need wiring?

    Does anything have to be done with the AT shift lock system. I didnt see anything about it in your link.
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