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  1. #1
    Turbonut's Avatar
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    LM2 map sensor connection

    Hi,
    Does anyone know which map sensor wires to connect the two LM2 analog input wires to? Got the RPM connection sorted but can't seem to find the map sensor connection anywhere on the forum.
    Thanks for any help


  2. #2
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    Can you go straight from the sensor? Just follow the hard black tube from the manifold to the sensor then?

  3. #3
    Turbonut's Avatar
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    Quote Originally Posted by lolzer View Post
    Can you go straight from the sensor? Just follow the hard black tube from the manifold to the sensor then?
    Don't quite follow what you are trying to say???
    I'm just tryin to find out the colour or pin no. of the positive and negative map sensor wires so I can connect an LM2. Hopefully someone out there knows!!!

  4. #4
    Moderator Snoman's Avatar
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    You should be able to just go off the sencer.Thats how mine is.....As far as what one of th three wires is which???Pin Number 2 is ground(Black and Blue wire) and pin Number 3(White and Black wire) is your signal.....Then on your analog cable You can use any analog channel you want..Just make sure you use the same channel wire for both..Example CHannel 1 you would use the black and purple wires,Channel 2 the brown and grey wires,3 red and white wire and 4 the orange and peach wire....Once you have the wires connected dont forget to set your LM-2 up to recognize the new input....Hope this helps...


    5.2.2 Wiring Analog Inputs
    The LM-2’s inputs are differential. A differential input does not measure a signal relative
    to electrical ground. Instead it measures the relative voltage between two signals. That
    is, it does not measure the '+' signal in relationship to ground, but in relationship to the '-'
    signal. It measures the 'difference' between them (hence the name differential input!)
    Please note that the + lead is signal positive, NOT power

    Looking at the connector with the clip up, pin 1 is the lower left.
    PIN USE COLOR
    1 Analog In 1 - Black
    2 Analog In 2 - Brown
    3 Analog In 3 - Red
    4 Analog In 4 - Orange
    5 Analog Out 1 - Yellow
    6 Analog Out 2 - Dark Green
    7 RPM - Blue
    8 Analog In 1 + Purple
    9 Analog In 2 + Grey
    10 Analog In 3 + White
    11 Analog In 4 + Peach
    12 Analog Out 1 + Lime Green
    13 Analog Out 2 + Brown/White
    14 RPM + Black/White

    Note: All these inputs and outputs are “differential”. That is, the negative inputs must
    be connected to ground.

  5. #5
    Turbonut's Avatar
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    Thanks Guys,
    That is all I need to know.
    Speed Freak told me you would be the man Sno!

    Cheers.

  6. #6
    TundraLu's Avatar
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    Quote Originally Posted by Snoman View Post
    You should be able to just go off the sencer.Thats how mine is.....As far as what one of th three wires is which???Pin Number 2 is ground(Black and Blue wire) and pin Number 3(White and Black wire) is your signal.....Then on your analog cable You can use any analog channel you want..Just make sure you use the same channel wire for both..Example CHannel 1 you would use the black and purple wires,Channel 2 the brown and grey wires,3 red and white wire and 4 the orange and peach wire....Once you have the wires connected dont forget to set your LM-2 up to recognize the new input....Hope this helps...


    5.2.2 Wiring Analog Inputs
    The LM-2’s inputs are differential. A differential input does not measure a signal relative
    to electrical ground. Instead it measures the relative voltage between two signals. That
    is, it does not measure the '+' signal in relationship to ground, but in relationship to the '-'
    signal. It measures the 'difference' between them (hence the name differential input!)
    Please note that the + lead is signal positive, NOT power

    Looking at the connector with the clip up, pin 1 is the lower left.
    PIN USE COLOR
    1 Analog In 1 - Black
    2 Analog In 2 - Brown
    3 Analog In 3 - Red
    4 Analog In 4 - Orange
    5 Analog Out 1 - Yellow
    6 Analog Out 2 - Dark Green
    7 RPM - Blue
    8 Analog In 1 + Purple
    9 Analog In 2 + Grey
    10 Analog In 3 + White
    11 Analog In 4 + Peach
    12 Analog Out 1 + Lime Green
    13 Analog Out 2 + Brown/White
    14 RPM + Black/White

    Note: All these inputs and outputs are “differential”. That is, the negative inputs must
    be connected to ground.


    Sno I hardwired my aux 1 for the Map sesnor as you explained above. So I used the black and purple for the Map sensor wires. Now what are the values needed in logworks for the Stock Map sensor? Right now In Logworks I see It is at -14.70 Kpa at 0.00 volt and 22.50 Kpa at 5.0v in my logworks.

  7. #7
    Sayers's Avatar
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    Quote Originally Posted by TundraLu View Post
    Sno I hardwired my aux 1 for the Map sesnor as you explained above. So I used the black and purple for the Map sensor wires. Now what are the values needed in logworks for the Stock Map sensor? Right now In Logworks I see It is at -14.70 Kpa at 0.00 volt and 22.50 Kpa at 5.0v in my logworks.

    This is in the "how to" section.
    http://www.greenhulk.net/forums/show...ude-Controller.

  8. #8
    TundraLu's Avatar
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    Quote Originally Posted by Sayers View Post
    Ahh I did not know that was for the Map sensor. I seen the thread but since it said "Voltage conversion chart for Rude Controller" did not give me the indication of what this conversion was for.


    thanks

  9. #9
    danieletrono's Avatar
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    Hi son, have you got any pic to how to weld two cables?


    thanks


    Quote Originally Posted by Snoman View Post
    You should be able to just go off the sencer.Thats how mine is.....As far as what one of th three wires is which???Pin Number 2 is ground(Black and Blue wire) and pin Number 3(White and Black wire) is your signal.....Then on your analog cable You can use any analog channel you want..Just make sure you use the same channel wire for both..Example CHannel 1 you would use the black and purple wires,Channel 2 the brown and grey wires,3 red and white wire and 4 the orange and peach wire....Once you have the wires connected dont forget to set your LM-2 up to recognize the new input....Hope this helps...


    5.2.2 Wiring Analog Inputs
    The LM-2’s inputs are differential. A differential input does not measure a signal relative
    to electrical ground. Instead it measures the relative voltage between two signals. That
    is, it does not measure the '+' signal in relationship to ground, but in relationship to the '-'
    signal. It measures the 'difference' between them (hence the name differential input!)
    Please note that the + lead is signal positive, NOT power

    Looking at the connector with the clip up, pin 1 is the lower left.
    PIN USE COLOR
    1 Analog In 1 - Black
    2 Analog In 2 - Brown
    3 Analog In 3 - Red
    4 Analog In 4 - Orange
    5 Analog Out 1 - Yellow
    6 Analog Out 2 - Dark Green
    7 RPM - Blue
    8 Analog In 1 + Purple
    9 Analog In 2 + Grey
    10 Analog In 3 + White
    11 Analog In 4 + Peach
    12 Analog Out 1 + Lime Green
    13 Analog Out 2 + Brown/White
    14 RPM + Black/White

    Note: All these inputs and outputs are “differential”. That is, the negative inputs must
    be connected to ground.

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