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BWM Brown Wire Mod 3rd Gen

Discussion in 'Modified 2002 - 2005 Explorers' started by P. doggy, September 10, 2007.

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    1. College Student

      College Student Well-Known Member

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      City, State:
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      I have the luxury of the message center so I have all those switches. I'm wanting to put my switches in the overhead console like an aircraft cockpit. The only problem is I don't like to hurt my car so I don't cut anything till I have a spare. I had a spare steering wheel tilt key before doing that mod. I'm just weird I guess. :dunno:
       
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    3. BigRondo

      BigRondo USMC 1371 Elite Explorer Moderator Emeritus

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      I know what you mean. I have a back-up radio bezel.
       
    4. LUVCHLD

      LUVCHLD New Member

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      So, let me get this straight. You guys all have 4x4 X's and you prefer 2x4 and this is the sole purpose of the "brown wire mod"?
       
    5. Kazer

      Kazer Well-Known Member

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      No, we prefer to decide when we want 4x4 rather than a computer deciding for us. Don't know about others but the Auto 4x4 has caused me to have close calls. Nothing like trying to anticipate what your truck is going to do on ice and having the Ex throw you a sudden curve ball
       
    6. Limited02

      Limited02 Well-Known Member

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      This and sometimes you just want to smoke the tires :burnout:
       
    7. D Hook

      D Hook Elite Explorer

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      Exactly right.

      It could be that other people are comfortable letting the computer decide but I'd prefer to turn it on and off as needed.

      Plus, there's a few stories of people ruining equipment because the 4x4 is stuck on and you don't know it, since there is no indicator light that comes on when it automatically shifts in and out of 4x4 mode. Only time the dash indicator light illuminates is when you select the 4x4 mode manually. I've never understood why Ford didn't put some kind of indicator light on the dash that comes on whenever the 4x4 is automatically activated. They do it on other vehicles to show your traction control kicks on.
       
    8. Kazer

      Kazer Well-Known Member

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      I did my BWM with a lighted switch so when it's not on, I can see the light get brighter and dimmer when the 4x4 control module tries to engage
       
    9. omagasohe

      omagasohe New Member

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      My reason, The drive shaft bearing in my fwd diferential needs to be replaced, i don't have the time, money, or the ability to lose my vehicle for the couple of days it'll take me to rip it apart. but durring the spring when i can bike into work, different story, so one cliped wire and i can delay an moderate issue, i'll finish the mod and rebuild the diferential in april.

      Nothing like turing a corner and your car sounding like it's going to shear in half.
       
    10. Dirt Destroyer

      Dirt Destroyer New Member

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      So what is the brown wire mod again? lol just kidding. Ive gone through all 22 pages now and I have one question that wasnt covered and is probably stupid. If Im in 2WD and want to go back to 4x4 auto. Is that something I can do while moving or do I need to be stopped/neutral? Thank you
       
    11. IZwack

      IZwack Moderator Emeritus

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      You don't need to be stopped and in neutral - the only time when the vehicle needs to be stopped and in neutral is when the transfer case is being shifted between HI and LO range (or visa versa) as this process involves a gear ratio change.
       
    12. Kazer

      Kazer Well-Known Member

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      I usually try to be off the throttle when I re-engage the 4x4. I've been afraid to flip the switch while the back tires are spinning like crazy. Not exactly sure what would happen :dunno:
       
    13. Dirt Destroyer

      Dirt Destroyer New Member

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      In theory it shouldn't mess anything up switching it back while driving because it does almost the same thing when it's already in auto 4x4. I doubt I'll need to flip it back while driving but I just wanted assurance but I'm with you kazer, lll make sure to take it easy if I do need to switch back.
       
    14. ndd7u

      ndd7u New Member

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      I have a 05 x and i thought this mod was factory installed in the center consule.. ?? Am I right or wrong. If I am wrong what does that button do.?
       
    15. Curtis

      Curtis Well-Known Member

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      Thats your Over Drive on/off switch
      when towing you usually have OD off so the trans does not go into a really low gear.
      nothing to do with 4x4
       
    16. 2Trux

      2Trux Active Member

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      In the console behind the junk tray there is a switch to disable the advancetrac. This might be the switch you are seeing. On my 05 the O/D disable is on the end of the shift handle.
       
    17. jaxjag

      jaxjag Member

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      i dont know how many times this has been asked and answered on here but, if i skip the relay and just ran the two brown wires straight to the switch what are the downfalls if any? pretty much just wondering if the relay is a must because i dont have a relay but i pretty much just put a switch between the two pieces brown wire?
       
    18. rangermidtn

      rangermidtn Active Member

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      You do not need the relay, the switch will be fine.
       
    19. IZwack

      IZwack Moderator Emeritus

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      The risk with running w/o a relay is:

      1) over-driving the switch. Switches can only handle so much power until they are overloaded, which could lead to a meltdown and/or fire.
      2) depending on the switch design (material, etc..), electricity could go through the operator.

      Not saying that these things will happen, but they are risks and with risks, percentages is the game.
       
    20. Kazer

      Kazer Well-Known Member

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      going on about 2 years since ive done this mod. never used a relay and havent burned up the switch or melted the wiring
       
    21. Tarpman

      Tarpman Active Member

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      Same here, just not as long as Kazer. Somewhere in here someone said there wasn't enough power going through switch to justify a relay. I like it, except the part when my wife keeps asking "what's that thing for again". Lol
       
    22. omagasohe

      omagasohe New Member

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      You have the same risk of getting shocked with or with out the relay. And if you get a 10 amp swich and it melts you need to take it to a shop the specializes in electrical work. You car is going to catch fire the wire isn't thick enough to carry that kinda load.
       
    23. D Hook

      D Hook Elite Explorer

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      I don't know what the fuse amp rating that carries that load is but it seems if you got a switch and wiring that would match or exceed that rating you'd be okay. So if it's a 20 amp fuse, you'd need a switch that's rated for 20 amps or more and wiring that would carry that load (plus a little extra maybe).
       
    24. cgerken44

      cgerken44 New Member

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      So I've read through this whole thing and still have a couple questions. Will this work on an 06 with the RSC or do I just need to hold down the traction button for the 5 seconds or whatever to completely disengage before i'm fully able to let the rear tires spin completely after doing the mod? Also is there a complete disengage for the RSC to where it's just off all the time no matter what? Thanks for everyone's help!
       
    25. Shaggy03Limited

      Shaggy03Limited New Member

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      ok I have seen this question has been asked countless times in the over 5.5 years of this thread and 23 pages and it has only been answered with speculation. has anyone that has completed this mod noticed or gotten an increase in mpg?
       
    26. Limited02

      Limited02 Well-Known Member

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      While this falls back to speculation since I have not done the BMW, I can say with 100% confidence that in no way, shape or form will you gain MPG from the BWM.

      The only thing the BWM is doing is stopping the motor on the transfer-case from engaging 4x4 when the wheels slip. Otherwise, everything that was moving before when you are cruising down the hwy is still moving after you do the BWM.
       

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