diagram of a car's electrical system

Discussion in 'Electronic Basics' started by J Jensen, Jun 27, 2004.

  1. J Jensen

    J Jensen Guest

    Hi

    Does anyone know where I can find a good diagram of the basic (ignition)
    electrical system of a car? (Preferably on the web). The manual and a
    couple books that I have aren't quite enlightening, and I haven't been
    able to find anything good with google...

    Specifically I'd like to understand what all the basic components are
    and how the interrelate. For example, what exactly does Ford's ignition
    module do (other than need to be replaced) ?

    thanks,
    Jeff
     
    J Jensen, Jun 27, 2004
    #1
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  2. J Jensen wrote:
    >
    > Hi
    >
    > Does anyone know where I can find a good diagram of the basic (ignition)
    > electrical system of a car? (Preferably on the web). The manual and a
    > couple books that I have aren't quite enlightening, and I haven't been
    > able to find anything good with google...
    >
    > Specifically I'd like to understand what all the basic components are
    > and how the interrelate. For example, what exactly does Ford's ignition
    > module do (other than need to be replaced) ?
    >
    > thanks,
    > Jeff


    That depends on how basic you need.
    http://www.icarumba.com/cobrands/co...icar_resourcecenter_encyclopedia_ignition.asp
    http://auto.howstuffworks.com/frame...www.autoshop-online.com/auto101/ignition.html

    --
    John Popelish
     
    John Popelish, Jun 27, 2004
    #2
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  3. J Jensen

    J Jensen Guest

    John Popelish <> wrote in message news:<>...
    > J Jensen wrote:
    > >
    > > Hi
    > >
    > > Does anyone know where I can find a good diagram of the basic (ignition)
    > > electrical system of a car? (Preferably on the web). The manual and a
    > > couple books that I have aren't quite enlightening, and I haven't been
    > > able to find anything good with google...
    > >
    > > Specifically I'd like to understand what all the basic components are
    > > and how the interrelate. For example, what exactly does Ford's ignition
    > > module do (other than need to be replaced) ?
    > >
    > > thanks,
    > > Jeff

    >
    > That depends on how basic you need.
    > http://www.icarumba.com/cobrands/co...icar_resourcecenter_encyclopedia_ignition.asp
    > http://auto.howstuffworks.com/frame...www.autoshop-online.com/auto101/ignition.html


    Thanks, John.
    Those references are pretty good, and maybe I can piece together what I need
    from them. But ideally someone would have a picture of the starting circut,
    the alternator circut and the ignition circut all in one diagram...

    --Jeff
     
    J Jensen, Jun 28, 2004
    #3
  4. J Jensen wrote:
    >
    > John Popelish <> wrote in message news:<>...
    > > J Jensen wrote:
    > > >
    > > > Hi
    > > >
    > > > Does anyone know where I can find a good diagram of the basic (ignition)
    > > > electrical system of a car? (Preferably on the web). The manual and a
    > > > couple books that I have aren't quite enlightening, and I haven't been
    > > > able to find anything good with google...
    > > >
    > > > Specifically I'd like to understand what all the basic components are
    > > > and how the interrelate. For example, what exactly does Ford's ignition
    > > > module do (other than need to be replaced) ?
    > > >
    > > > thanks,
    > > > Jeff

    > >
    > > That depends on how basic you need.
    > > http://www.icarumba.com/cobrands/co...icar_resourcecenter_encyclopedia_ignition.asp
    > > http://auto.howstuffworks.com/frame...www.autoshop-online.com/auto101/ignition.html

    >
    > Thanks, John.
    > Those references are pretty good, and maybe I can piece together what I need
    > from them. But ideally someone would have a picture of the starting circut,
    > the alternator circut and the ignition circut all in one diagram...


    Almost every year, make and model has a different schematic.

    Here is a primitive schematic or two (hit the next button:
    http://www.tpub.com/content/neets/14176/css/14176_105.htm
    It shows a DC generator instead of an alternator.

    Here is a GM training schematic collection:
    http://www.autoshop101.com/forms/gmprac.pdf
    from the Practice section of:
    http://www.autoshop101.com/autoshop31.html

    You might want to look for a Chiltons or Haynes repair manual at the
    local library that covers your vehicle.




    --
    John Popelish
     
    John Popelish, Jun 29, 2004
    #4
  5. John Popelish <> wrote:

    >Almost every year, make and model has a different schematic.
    >
    >Here is a primitive schematic or two (hit the next button:
    >http://www.tpub.com/content/neets/14176/css/14176_105.htm
    >It shows a DC generator instead of an alternator.
    >
    >Here is a GM training schematic collection:
    >http://www.autoshop101.com/forms/gmprac.pdf
    >from the Practice section of:
    >http://www.autoshop101.com/autoshop31.html
    >
    >You might want to look for a Chiltons or Haynes repair manual at the
    >local library that covers your vehicle.


    I'll study that timely PDF myself, as I'm trying to get access to the
    horn relay circuit on a '96 BMW 328 SE please? I want to add a
    supplementary circuit.

    I've located the appropriate terminals in the fuse/relay box under the
    bonnet/hood. Essentially that was luck, as it was the first relay I
    tried; yellow one at top left corner. None of them are identified,
    either in the fuse box diagram or the service manual.

    But that leaves me with the daunting task of getting wires inside.
    Anyone here know a convenient 'hole' BTW?. That's why ideally I'd like
    access inside the car, i.e. to the horn activation wire, and 12V and
    0V too please.

    I used to be able to add gadgets to my cars with relative ease a
    couple of decades ago... ;-(

    Jeff: Hope you don't mind my chipping in to your thread.

    --
    Terry Pinnell
    Hobbyist, West Sussex, UK
     
    Terry Pinnell, Jun 29, 2004
    #5
  6. J Jensen

    John G Guest

    "Terry Pinnell" <> wrote in message
    news:...
    > John Popelish <> wrote:
    >
    > >Almost every year, make and model has a different schematic.
    > >
    > >Here is a primitive schematic or two (hit the next button:
    > >http://www.tpub.com/content/neets/14176/css/14176_105.htm
    > >It shows a DC generator instead of an alternator.
    > >
    > >Here is a GM training schematic collection:
    > >http://www.autoshop101.com/forms/gmprac.pdf
    > >from the Practice section of:
    > >http://www.autoshop101.com/autoshop31.html
    > >
    > >You might want to look for a Chiltons or Haynes repair manual at the
    > >local library that covers your vehicle.

    >
    > I'll study that timely PDF myself, as I'm trying to get access to the
    > horn relay circuit on a '96 BMW 328 SE please? I want to add a
    > supplementary circuit.
    >
    > I've located the appropriate terminals in the fuse/relay box under the
    > bonnet/hood. Essentially that was luck, as it was the first relay I
    > tried; yellow one at top left corner. None of them are identified,
    > either in the fuse box diagram or the service manual.
    >
    > But that leaves me with the daunting task of getting wires inside.
    > Anyone here know a convenient 'hole' BTW?. That's why ideally I'd like
    > access inside the car, i.e. to the horn activation wire, and 12V and
    > 0V too please.
    >
    > I used to be able to add gadgets to my cars with relative ease a
    > couple of decades ago... ;-(
    >
    > Jeff: Hope you don't mind my chipping in to your thread.
    >
    > --
    > Terry Pinnell
    > Hobbyist, West Sussex, UK
    >


    Terry, no disrespect just a fun comment.
    I think you are from the old Lucas school where you could put one fuse
    between the 2 positions and everything would work.
    I once rescued a lady way west of Mount Isa (Australia) by jumping the
    starter relay of her Austin 1800 with a spanner. Told her to not stop
    the engine till she was at a garage which was propably 200 miles away at
    the time.
    --
    John G

    Wot's Your Real Problem?
     
    John G, Jun 29, 2004
    #6
  7. "John G" <> wrote:


    >Terry, no disrespect just a fun comment.
    >I think you are from the old Lucas school where you could put one fuse
    >between the 2 positions and everything would work.
    >I once rescued a lady way west of Mount Isa (Australia) by jumping the
    >starter relay of her Austin 1800 with a spanner. Told her to not stop
    >the engine till she was at a garage which was propably 200 miles away at
    >the time.


    You're probably not far wide of the mark <g>.

    BTW, Joseph Lucas (where my aunt worked for about 30 years) was a few
    miles away from my childhood home in Erdington, Birmingham.

    --
    Terry Pinnell
    Hobbyist, West Sussex, UK
     
    Terry Pinnell, Jun 29, 2004
    #7
  8. J Jensen

    JeffM Guest

    >>>>...what exactly does Ford's ignition module do
    >>>>(other than need to be replaced) ?
    >>>> Jeff (J Jensen)

    >
    >You might want to look for a Chiltons or Haynes repair manual at the
    >local library that covers your vehicle.
    > John Popelish


    I got the best wiring diagrams for my old American cars (mostly Fords)
    from National Service Data (now Mitchell).

    A good library will have all 3.
    A great library (L.A. County) will have multiple copies of all 3.
     
    JeffM, Jun 29, 2004
    #8
  9. J Jensen

    J Jensen Guest

    John Popelish <> wrote in message news:<>...
    > Almost every year, make and model has a different schematic.
    >
    > Here is a primitive schematic or two (hit the next button:
    > http://www.tpub.com/content/neets/14176/css/14176_105.htm
    > It shows a DC generator instead of an alternator.
    >


    thanks again, John. Yes, I think this is the best picture I've
    seen so far ( I clicked "next" 2 times)



    > Here is a GM training schematic collection:
    > http://www.autoshop101.com/forms/gmprac.pdf
    > from the Practice section of:
    > http://www.autoshop101.com/autoshop31.html
    >
    > You might want to look for a Chiltons or Haynes repair manual at the
    > local library that covers your vehicle.


    Yes, I have one of these (Haynes, I think). It is pretty good for actually
    trying to replace something, but the circut diagrams are way too detailed
    for the kind of overview that I wanted.

    --Jeff
     
    J Jensen, Jun 30, 2004
    #9
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