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  1. #1
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    84 528 OBC install

    I got this OBC at the junkyard,the plug in is smaller on my clock,the question i have is what do i need to install it,i can go back and get the cable with the plug in but how hard is it to wire,was the OBC something you orderd,is there a plug in my car tucked away somewere from my cpu,or should i quit now while i am ahead LOL


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    Re: 84 528 OBC install

    ok i got the cable to the obc,one end plugs into the obc,but were does the other end plug into the instrument cluster???

  3. #3
    Matt
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    Re: 84 528 OBC install

    I actually just REMOVED this from my car, the green big plug obviously goes in back of the OBC, the yellow goes in back of the cluster, there is a tiny one wire connector that goes right to the left of the steering column BUT im not familiar with the early cars if they have it, there is the small green that goes into the OBC, there is the black shrinkwrapped one that goes to the outside temp sensor, there is the blue or white one that goes under the speedometer for speed signal to OBC, and i think that was it.

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    Re: 84 528 OBC install

    so the yellow plug goes in the instrument assume there is a plug in were? on the cluster cluster,as this car never had a obc i

  5. #5
    Matt
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    Re: 84 528 OBC install

    ill take a pic later tonight

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    Which do you have now OBCI

    or OBCII. They are different and DO NOT easily interchange.

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    Re: Which do you have now OBCI

    i Belive its a silver box-OBC 1,it has 1 cable one end to obc the other to ???

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    Re: Which do you have now OBCI

    This car never had a obc display,but its a aug. 83 production 1984 model
    i found a 84 in the junk yard it had the older obc ,only 1 cable to it so i thought it might be east to plug into my car,it only had 1 cable ,one end going into the obc display but the yellow plug about 2" long was hanging in the car in the junkyard so i wasn't sure were it went,my instrument cluster has 1 blue plug and that's all.

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    Re: Which do you have now OBCI

    ok ok i need to go get the obc control unit at the junkyard,i see now

  10. #10
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    Look for the ETM diagrams for early and late e28

    cars on e38.org/e28.

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