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Thread: Does anyone make a plug n' play wiring harness for an ls1 swap?

  1. #1
    Join Date
    Dec 2006
    Location
    Richmond, CA
    Posts
    1,183
    My Cars
    1997 BMW 740i

    Does anyone make a plug n' play wiring harness for an ls1 swap?

    Can't find anything on the inter-web, or a diagram of how to make your own? Thanks.

  2. #2
    Join Date
    Dec 2009
    Location
    Warsaw, IN
    Posts
    16
    My Cars
    1999 540i 6speed
    Do you have the wiring harness from the vehicle or engine tranny combo?

  3. #3
    M5Hunter is offline Still has a E39 Supporting Vendor
    Join Date
    Nov 2009
    Location
    Hanover, VA
    Posts
    3,749
    My Cars
    E39
    NAH will combine the two harnesses for you, but it is exspensive, if you follow what others have done on this site you will see it is easy to do yourself

  4. #4
    Join Date
    Dec 2005
    Location
    Central Valley, CA
    Posts
    2,905
    My Cars
    2011 328xi, E36 LS1
    If you can do the rest of the swap yourself, you can do the wiring too, it's not very difficult. Several writeups here in this section if you need help, too.

    I don't know of anyone other than NAH that offers a harness.


  5. #5
    Join Date
    Oct 2006
    Location
    Naperville, IL
    Posts
    2,462
    My Cars
    1998 540i
    I tried to sell one for a while but had no takers.
    Rob
    Prior projects:
    1998 540i with 6.6 LS2/T56 Chevy Power
    - pictures and details
    1992 325i with 6.6 LS2/T56 Chevy power - pictures and details
    1995 M3 with 6.6 LS2/T56 Chevy power - pictures and details




  6. #6
    Join Date
    Oct 2007
    Location
    jacksonville, fl
    Posts
    2,229
    My Cars
    e36 m3 Ls2, 318I, 325is
    i did mines with the help from my friends in this section, just ask we are here to help, plus there are write ups here too

  7. #7
    Join Date
    Jun 2005
    Location
    Portland, Oregon
    Posts
    1,762
    My Cars
    04 Allroad, F20c Lotus 7
    http://tongboy.com/images/e36ls1/199...t%20Wiring.pdf

    and you only need to hook up 7 of those to drive it around - SEVEN WIRES - all of which are in the engine bay and went to or very near the original ECM

  8. #8
    Join Date
    Mar 2008
    Location
    Catonsville
    Posts
    192
    My Cars
    e92 e36 old toyo pickup
    There are plenty of companies that sell plug n' play harnesses, or you can send yours out and have it re-worked.

    Checkout the Conversions & Hybrid section of ls1tech.com

  9. #9
    Join Date
    Mar 2006
    Location
    Memphis, TN
    Posts
    2,473
    My Cars
    95 M3, 01 330ci
    If you have both harnesses and the knowledge to pull off the rest of the swap it's easy to wire.

    Otherwise, if you want a PNP harness, send me the harnesses and I'll do it for a fee.

    RAO had one forsale for a while, but it depends on the year vehicle as there are some small differences year - year.

  10. #10
    Join Date
    Aug 2018
    Location
    Waco
    Posts
    2
    My Cars
    530i

    Re wiring harness

    Quote Originally Posted by rao View Post
    I tried to sell one for a while but had no takers.
    What would you charge to do one for a 02 530i I’m putting a ls1

  11. #11
    Join Date
    Mar 2006
    Location
    Memphis, TN
    Posts
    2,473
    My Cars
    95 M3, 01 330ci
    It would be way more than it is worth...

    Seriously like I said above get both engine wiring harnesses and go to town with the ETM and the info from www.lt1swap.com ...

  12. #12
    Join Date
    Oct 2011
    Location
    Canterbury, CT
    Posts
    107
    My Cars
    1995 BMW 325i
    I have my write ups/checklist that I compiled from info I found here/LS1 Tech, PM me an email address and I can send over what I have. It's not difficult if you take your time and just cross things off as you go.

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