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  1. #1
    Junior Member One Ring
    Join Date
    Mar 05 2025
    AZ Member #
    1003231
    Location
    Pasco 99301

    B7 Manual Trans Swap

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    Can some one confirm this can be done with a b7 ? I just did a trans swap & I'm stuck at the wiring in the clutch saftey switch In the A/T...

    https://youtube.com/clip/UgkxfN6YHnC...pWTFMKEd5q2i2q


    Also, ive been trying to do my homework on the clutch switch, but i feel like im trying to learn a new language trying to understand this wire diagram lol. Can someone please explain what I have to do.

  2. #2
    Veteran Member Four Rings VinnysS4's Avatar
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    Nov 12 2015
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    364349
    My Garage
    2004 s4 Avant, 2005.5 S4 Manual swapped, 2002 A4 3.0 6 speed, 2004 A4 1.8 5 speed
    Location
    Oregon

    Yes I've done it. There is a relay under the ecu you need to remove and jump for it to start. The other clutch switch will be wired to the brake pedal sensor and one wire ran to the ecu. I'd have to look to see which terminal. It's been a while.

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  3. #3
    Veteran Member Four Rings VinnysS4's Avatar
    Join Date
    Nov 12 2015
    AZ Member #
    364349
    My Garage
    2004 s4 Avant, 2005.5 S4 Manual swapped, 2002 A4 3.0 6 speed, 2004 A4 1.8 5 speed
    Location
    Oregon

    Pin 41 green wire and red wire on the switch in the first photo

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    1997 VW GTI VR6 (sold), 2003 Audi RS6 (sold), 2010 Audi A4 2.0T (RIP Totaled on 11/2/2015 ) 2005.5 Audi S42011 Dieselgate Q7 TDI..... patiently waiting for my warranty to expire!!

    My build log
    http://www.audizine.com/forum/showth...-s-s4-timeline

    "Everyone is An expert when they make their own category."

  4. #4
    Junior Member One Ring
    Join Date
    Mar 05 2025
    AZ Member #
    1003231
    Location
    Pasco 99301

    Quote Originally Posted by VinnysS4 View Post
    Pin 41 green wire and red wire on the switch in the first photo

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    Thank you so much i appreciate the reply. I'm gonna need to cut out the plug-in connectors on my M/T right ?

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  5. #5
    Veteran Member Four Rings walky_talky20's Avatar
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    Jun 30 2008
    AZ Member #
    30427
    Location
    Erie, Pennsylvania

    For the upper clutch switch (needed to fix cruise control and to fix some annoying drivability & throttle response issues especially during shifting), the process is very much the same that I had to do to my B5. So if you want to look at some pictures of physically what you need to be doing, you can look here:

    https://www.audizine.com/forum/showt...eed-Swap-(DBW)

    You just splice one wire off the existing brake pedal switch, run that to into your upper clutch switch. Then the other wire goes out and into a specific pin on your ECU. Looks like PIN 41 for you. I just soldered my wire directly to a blank pin, but there are a few ways to handle it. Yes, you'll want the pigtail harness that came from wherever your clutch pedal and switch came from, ideally.

    For the bottom clutch switch (for starter safety), you can just bypass it at the relay if you want - totally up to you. I would say if you are going to have other people drive the car - and those people usually drive automatics - you REALLY want the clutch start safety feature to work. People LOVE to jump in a car and turn the key, *THEN* realize it's a manual trans and they need to push the clutch. If the starter works on that first crank? Well, they just drove through your garage door. Cool.
    ^Don't listen to this guy, he's not even a mechanic.
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