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Metric Plug and Play S54 and S62 Wiring Adapter Harnesses from Harvey Racing

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  • Andrew325is
    replied
    When shopping for an adapter harness for your swap you may be tempted to shop based on price, but there are other things to consider.

    Here’s a breakdown of the differences between Andrew’s harnesses from Harvey Racing and the competition.

    -Higher quality construction

    -Genuine BMW connectors (others often use 3rd party or homemade 3D printed connectors)

    -Metric high temperature wire imported from Europe that matches BMW OEM wire (others use cheaper AWG wire which does not properly match the connectors, the wrong sizes may not adequately handle circuits, and may not be high temperature which would be unsuitable for the engine bay.)

    -Better wire lengths (matched to original harnesses)

    -Premium Kester brand lead-free solder (3% silver) added to ring terminals and large connector pins to improve connections and seal out moisture.

    -Premium 3M brand heat-shrink and high quality braided sleeving to protect wires

    -Splashproof fuse holders protect important circuits (others may not include any fuses to protect circuits)

    -Labeled connectors and detailed instructions for easy installation

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  • knight_e36
    replied
    I too would like to add myself to the list for one of these S54 canbus harness adapters, I've got a E36 M3 that could really use it since right now the car just dies at idle when I switch the A/C on. Looking forward to that new website and finally getting my converted Cluster added in and finishing my car off

    Leave a comment:


  • dumbinacan
    replied


    I’m really looking forward to this highly anticipated item—I need the S54 to E30 harness. Please let me know the moment it’s available so I can make my purchase right away!

    Leave a comment:


  • Caperix
    replied
    Originally posted by NvE30 View Post
    Is it possible to make a harness adapter to drop an m54b30 into an e90?
    An early e60 with the m54 should get you everything you need. May I ask why you are looking to go with the m54, n52's are cheaper & make more power.

    Leave a comment:


  • Andrew325is
    replied
    Originally posted by NvE30 View Post
    Is it possible to make a harness adapter to drop an m54b30 into an e90?
    I just saw your message. I sent you a PM. Just in case anyone else is wondering that is something I could do for a race car or for export, but I haven't made any harnesses for an E90 or newer BMW. I would need to R&D it; so you'd need to send me the chassis connectors or photos of them with the part numbers listed on them.

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  • NvE30
    replied
    Is it possible to make a harness adapter to drop an m54b30 into an e90?

    Leave a comment:


  • NvE30
    replied
    Is it possible to make an engine harness adapter to run an m54 in an e90 or e82 chassis?

    Leave a comment:


  • Andrew325is
    replied
    Originally posted by esoes06 View Post
    E34 m50 nv Body equipped. M54 engine swap. I'm looking for a harness or adapter that fits this.Accelerator pedal Manual and throttle Manual
    Hello,

    Send me an email at harveyracingsales@gmail.com.

    Leave a comment:


  • esoes06
    replied
    E34 m50 nv Body equipped. M54 engine swap. I'm looking for a harness or adapter that fits this.Accelerator pedal Manual and throttle Manual

    Leave a comment:


  • Andrew325is
    replied
    Are people still doing engine swaps? I'm having a Halloween sale on adapter harnesses.

    -$76 off dual vanos M5x, S54, M62 M5.2.1, M62TU, & S62 (e.g. that makes the S54 E30 harness $499)
    -$31 off single vanos M5x, M60, M62 M5.2 which makes them $199.

    I've been making these for a decade and I'm the only one who uses the correct metric wire.
    I'm caught up on orders so lead time is short (1-2 weeks).​

    Send me an email at harveyracingsales@gmail.com. (If I don't respond right away it's because I'll be in and out of the house working today.)

    Leave a comment:


  • Andrew325is
    replied
    I fulfilled my huge backlog of orders from the summer. Lead time is only 1 to 2 weeks now, depending on availability of connector parts from BMW. I updated the website with some new products.

    Leave a comment:


  • Andrew325is
    replied
    I can accommodate a few orders. I had a huge backlog from fall and winter because I'm in school again so I have very limited time for these and BMW has been having supply chain problems. I'm all caught up now, so I can get a few done within a reasonable amount of time (depending how quickly parts arrive from BMW; usually a week or two).

    Leave a comment:


  • Andrew325is
    replied
    Here are some ECU flashing resources if you want to flash your own ECU.

    For MS41: https://sites.google.com/site/openms41/

    For MS42 & MS43 (also includes a flasher for MSS54, MSS54HP, MSS52 that works better than BMWFlash and MSSFlasher): https://www.ms4x.net/index.php?title=Main_Page

    MSS54, MSS54HP, MSS52: https://www.ecuworx.co.uk/downloads/. FAQ: https://www.ecuworx.co.uk/2015/05/19...ion-tool-faqs/ Don’t use BMWFlash or MSSFlasher like it says. Those can corrupt the file. Use MSS5x flasher or quickflash.

    BMW factory/dealer software: BMW Tools, ISTA, SP Datens, etc: https://www.e90post.com/forums/showthread.php?t=1681573 Use these to update or change factory software on ECU.


    Part numbers for ICOM Next. Use this with BMW software. Buy them from your BMW dealer’s parts counter.

    ICOM A (main unit): 81312360883

    ICOM C (20-pin adapter): 81312360885 (this is required for MS41 since it provides programming voltage)


    K-DCAN cable for 3rd party apps: https://www.bimmergeeks.net/product-...dition-k-dcan1


    Instructions for bench flash harnesses below. You can use 0.5 mm2 or 20 gauge wire.


    To make bench flash harness for MS42, MS43, MSS54, MSS54HP, MSS52:

    +12V:

    X60001 pins 1,7,8 and OBD2 X19527 pin 16 with 5 amp fuse

    Ground:

    X60001 pins 4,5,6 and OBD2 X19527 pins 4 and 5, and pin terminal for 104 boot pin

    TXD2 K-Line:

    X60001 pin 3 to OBD2 X19527 pin 7


    These pins aren't required because they are internally connected in DME (0 ohm resistance):

    X60004 pin 26 . . . . . . . +12V . . . . . . (internal wired to X60001 pin 1)

    X60004 pin 32 . . . . . . . TXD2 K-Line . . (internal wired to X60001 pin 3)



    To make bench flash harness for MS41:

    X6000:

    26,49,60 - power (+)12v (wire 60 to 20-pin port pin 18 instead if installing 20-pin port)

    28 - Ground (-)

    88 - K Line



    To add 20-pin port to bench flash harness:

    D100 connector:

    +12 volts: 4, 14, 16

    Ground: 19

    TXD2 diagnostic line: 17 (from X6000 # 88)

    Program select: 18 (from X6000 # 60) (make sure pin 60 is not wired to get voltage at all times)



    Parts for MS42, MS43, MSS54, & MSS52 ECU bench flashing harness:

    X60001: Covering cap: 12527502456

    Socket housing 9 POL. /A1 12521744624

    Junior timer pins:

    Junior timer, 0.22-0.5mm: 964280

    Junior timer, 0.5-1mm: TE Part #: 964284 or 964286-2

    OBD2 connector: Plug housing 16 POL.: 61138380698

    -Flat spring contact 0,35-0,5MM²/AU: 61138366598

    Micro Timer III @ TE: 1241732-2, 969005-2



    Parts for MS41 ECU bench flashing harness:

    X6000 ECU connector: Plug terminal control unit DDE/EGS 88 POL: 12521724131 (Bosch 1928401587)

    -Takes junior timer and micro timer 1 pins.

    -Micro timer 1: 0.35-0.75 mm2: 928939-1 (reel/cut strip) or 929927-1 (loose piece)

    OBD2 connector: Plug housing 16 POL.: 61138380698

    -Flat spring contact 0,35-0,5MM²/AU: 61138366598



    D100 Data Link Connector (Diagnosis plug):

    -Housing: 12521711218

    -Circular contact 2.5 0,5-1,5MM²: 61131376191 (This is fine for all connections on bench flash harness. You’ll need bigger pins if you’re wiring it into the car for some of the connections.)
    Last edited by Andrew325is; 07-09-2025, 03:33 PM.

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  • Andrew325is
    replied
    You can still email me at the old email address, but I made a new dedicated one for harness orders. It is harveyracingsales@gmail.com.

    I'm still making harnesses, but I've decided to not do ECU flashes. I can direct you to resources to do that yourself if you need to.
    Last edited by Andrew325is; 07-18-2021, 01:19 PM.

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  • Andrew325is
    replied
    I changed the location of the fuel pump relay on the E36 harness for S54, M54, M52TU, S62 so that it will mount in the OEM location clipped to the side of the fuse box.

    Here's an S54 adapter harness for an OBD2 E36 wired for the Z3M instrument cluster and some other options such as a connector for the electric fan coolant sensor.

    Leave a comment:

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