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Thread: The E39 LS wiring thread

  1. #26
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    Not the spaghetti decoder version that gave pics. The other one sucks, hard to navigate and no pictures of connectors.

  2. #27
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    You mean like this one?

    Rob
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    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




  3. #28
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    You're clearly more handy with bmwplanet than I.

  4. #29
    M5Hunter is offline Still has a E39 Supporting Vendor
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    I'm not sure I understand why people are grounding the DME relay. People have stated that relay powers 4 other relays, but i dont see it. I plan on running a separate fuel pump relay anyway and I don't see what else it really powers that I need. I assume the start signal wire and key on power works without the DME relay powered. During the week I am unable to devote the time needed to wire trace, but Saturday I hope to jump in!

  5. #30
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    You don't need a separate relay for the fuel pump . The dme relay does power up a few niter things.
    2006 X5 L83 5.3 6l80 swapped in progress
    1999 528i 5.7L 4l60e swapped w/ 31 spline 8.8 cobra diff
    2007 ZX-10r - sold
    1987 R-10 SWB L83 5.3L 6L80e swapped

  6. #31
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    Yes, but instead of installing 2+ relays to turn on the DME relay, install one fuel pump relay.

  7. #32
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    The most un-obtrusive, easiest, least connections is converting polarity to switch on the dme and fuel pump relays. Doing this also lets you use the on-board fuse holder in the e-box without additional wiring. There's the easy way and then there's the hard way. 2 extra relays doesn't scare me. There really isn't a wrong way to do it as long as everything works, right?
    Last edited by James39; 03-29-2013 at 08:25 PM.
    '99 BMW 540i6 L33 5.3, PRC Heads, E-force supercharged
    http://forums.bimmerforums.com/forum....php?t=1674320

  8. #33
    M5Hunter is offline Still has a E39 Supporting Vendor
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    The only reason I am using a different fuel pump relay is because I am using the aeromotive 340 pump and want bigger wires going to it.

  9. #34
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    Quote Originally Posted by James39 View Post
    The most un-obtrusive, easiest, least connections is converting polarity to switch on the dme and fuel pump relays. Doing this also lets you use the on-board fuse holder in the e-box without additional wiring. There's the easy way and then there's the hard way. 2 extra relays doesn't scare me. There really isn't a wrong way to do it as long as everything works, right?
    Totally agree. No wrong way, I found it easier to start fresh myself, no inverting relays.

  10. #35
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    I started on some minor wiring today, specifically the starter signal wire (12V+ when key is turned to "start" position.

    Found some conflicting information. Initially I looked at the wiring diagram for the starter circuit on bmw-planet WDS.

    X6056 is the one I think I need to tap.


    Pin 2


    WDS says it looks like this:


    However, mine is nothing like that. I have the DME ME 7.2 system, and WDS did not list that system for the starter circuit diagram.

    Here's what I think is the correct one, and its location in the e-box:




    I probed some of those red wires in the last few pictures looking for 12V while my fiancee turned the key to start, on, and off. They all registered 12V when the key was "on", and I don't think they gave me 12V when it was at "Start". I don't want to wire this thing wrong to where the starter spins as soon as the key is to "on". Anyone have input?

    2001 BMW 560i 6.0 LSx/T56 SOLD


    2000 Corvette Hardtop FRC

  11. #36
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    In my Ebox, there was a 10 or 12 pin (large pins, not the micro pins) clear or white translucent connector that had all the power connections in it. I just used those after figuring out what they were with the test light.
    '99 BMW 540i6 L33 5.3, PRC Heads, E-force supercharged
    http://forums.bimmerforums.com/forum....php?t=1674320

  12. #37
    M5Hunter is offline Still has a E39 Supporting Vendor
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    Today I was going to add pins to my cluster for tach and CEL. Pulled the cluster...3 connectors. Everything thing that everyone has told me, there are 2 connectors. Pulled up bmw-planet, not a single mention of 3 connectors. Sent a message to Brandon who also has a 99 car, 2 connectors on his too... Wtf


  13. #38
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    The cluster with 3 connectors is the IKE, or "high" cluster. The 2 plug cluster is the KOM, or "low" cluster. There should be both listed in WDS.

    The cluster has all the pins already, you have to add pins to the wired side of the plug...
    Last edited by Jesus Freak; 04-07-2013 at 01:39 PM.

  14. #39
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    Quote Originally Posted by 357i View Post
    Today I was going to add pins to my cluster for tach and CEL. Pulled the cluster...3 connectors. Everything thing that everyone has told me, there are 2 connectors. Pulled up bmw-planet, not a single mention of 3 connectors. Sent a message to Brandon who also has a 99 car, 2 connectors on his too... Wtf
    You guys bought cheap cars





    Quote Originally Posted by Jesus Freak View Post
    The cluster with 3 connectors is the IKE, or "high" cluster. The 2 plug cluster is the KOM, or "low" cluster. There should be both listed in WDS.

    The cluster has all the pins already, you have to add pins to the wired side of the plug...
    +1
    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




  15. #40
    M5Hunter is offline Still has a E39 Supporting Vendor
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    The IKE shows a module on the back which mine doesn't have

    know the pins are already in the cluster, I meant add pins to the connector. Worded it wrong.
    Last edited by 357i; 04-07-2013 at 03:05 PM.

  16. #41
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    If you have only 2 connectors you don't have the IKE cluster, you have the KOM cluster.
    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




  17. #42
    M5Hunter is offline Still has a E39 Supporting Vendor
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    I've got 3. Btw, I called your cell phone today, not so sure it was the right number

  18. #43
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    Fixed
    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




  19. #44
    M5Hunter is offline Still has a E39 Supporting Vendor
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    Someone got a message that won't make sense... lol

  20. #45
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    I'm still lost...
    :: 1999 BMW 528iT ::
    LS3 / T56 swapped

  21. #46
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    on what?

    I stopped by the junkyard over the weekend and clipped a few cluster pigtails from some mid 90s E32s and E36s. I'll probably de-pin a few of those later this week and insert into the existing cluster harness plug.

    2001 BMW 560i 6.0 LSx/T56 SOLD


    2000 Corvette Hardtop FRC

  22. #47
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    How do you get the CEL light to work? I've ran through the pinouts but still can't find it...

  23. #48
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    Quote Originally Posted by Lelan View Post
    How do you get the CEL light to work? I've ran through the pinouts but still can't find it...
    Look under "Body electrical system" - information and displays -> indicators -> warning lamps. You have to look at the ancient e39's 12/95-9/98. I know it used a ground because I wired my PCM CEL directly to it, but can't remember if I had to add a pin and recode for it or not.
    '99 BMW 540i6 L33 5.3, PRC Heads, E-force supercharged
    http://forums.bimmerforums.com/forum....php?t=1674320

  24. #49
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    Quote Originally Posted by James39 View Post
    Look under "Body electrical system" - information and displays -> indicators -> warning lamps. You have to look at the ancient e39's 12/95-9/98. I know it used a ground because I wired my PCM CEL directly to it, but can't remember if I had to add a pin and recode for it or not.
    Gracias sir

  25. #50
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    Has to be coded aswell
    2006 X5 L83 5.3 6l80 swapped in progress
    1999 528i 5.7L 4l60e swapped w/ 31 spline 8.8 cobra diff
    2007 ZX-10r - sold
    1987 R-10 SWB L83 5.3L 6L80e swapped

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