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Saab: accessing relays behind fascia panel in late-1982 C900 - how?

  1. #1
    Craig
    Guest

    accessing relays behind fascia panel in late-1982 C900 - how?


    For the life of me I cannot figure out a way to remove the lower fascia
    panel in my C900 (late 1982) without totally removing the intruments, etc.

    I'm loathe to do that at this stage, but after a few hours of frustration I
    can't see any other way to do it.

    Reason I need to do this is the RHS rear combination light is giving wierd
    behaviour. With the electricals engaged, if I select right indicator the
    front indicator light flashes but the rear one does not. Instead, the
    dual-filament brake light alternates power on it's filaments, and the middle
    brake light flashes.

    If I press on the brake pedal, the flasher relay stops flashing and all
    right-turn indication action stops until the brake pedal is released again.

    I need to access the relays behind the fascia panel to trace back the
    indicator wiring and see if there is some sort of wierd short circuit or
    wires joined up where they shouldn't be.

    The problem has only started to occur recently. Any things I can check out
    without going to the trouble of gutting the insides of the car to access the
    relays behind the lower fascia panel?

    I have also noticed that with the rear combination lights, the earth pins on
    the multi-pin connectors tend to fail. My donor car has custom earth wires
    bolted to the lamp holder while my running car doesn't. I have found a
    scotch-lok connector that's very badly corroded (looks like it's slightly
    burnt) that I need to replace, but that's not a recent thing. Probably
    existed when I purchased the car.

    Regards,

    Craig.
    --
    Craig Ian Dewick (apana.org.au). http://lios.apana.org.au/~craig
    APANA Sydney Regional Co-ordinator. Operator of Jedi (an APANA Sydney POP).
    Always striving for a secure long-term future in an insecure short-term world
    Have you exported a crypto system today? Do your bit to undermine the NSA.

  2. #2
    MeatballTurbo
    Guest

    Re: accessing relays behind fascia panel in late-1982 C900 - how?

    In article <buiq5h$p43$apana.org.au>, apana.org.au
    says... 

    Check your earthing point at that rear light cluster first. It may be a
    bad ground there, and is a common fault (rear light ground faults).

    If you do need to drop the knee bolster, remove the steering wheel.
    Take out the ashtray, and unbolt the center console if you have one (one
    bolt behind ashtray, two screws under the center ribbed rubber strip at
    the bottom).

    Where the console bolted in behind the ashtray is a larger bolt (13 or
    14mm I think) remove that.

    Then, underneith the hood, in the inner wing directly under the corners
    of the windshield, there is a 10mm bolt on each side of the car. It may
    be covered in sealant that needs to be removed. It is a little fiddly,
    but you can get an extension especially with a UJ onto it. that should
    be all the bolts out now, and it comes out, then down, or down then out
    (can't remember exactley).

    I think some of the later models have more bolts, but I don't have one
    of them so can't advise.
    --
    The poster formerly known as Skodapilot.
    http://www.bouncing-czechs.com

  3. #3
    Mike
    Guest

    Re: accessing relays behind fascia panel in late-1982 C900 - how?


    "Craig Ian Dewick" <apana.org.au> wrote in message
    news:buiq5h$p43$apana.org.au... 

    middle 
    again. 
    the 
    on 

    This sounds like an earthing problem for the rear light units, rather than
    an electrical fault behind the dash.
    My C900, Shitroen ZX and Ford Orions have all had fairly random acting rear
    lights. Cleaning up all the connections, and in the case of the ZX making
    "custom" earth wires solved the problem.

    Mike



  4. #4
    Harvey
    Guest

    Re: accessing relays behind fascia panel in late-1982 C900 - how?

    On Tue, 20 Jan 2004 08:50:57 +0000 (UTC), apana.org.au
    (Craig Ian Dewick) wrote:
     

    First thing I'd do is to run that ground wire properly, and either
    clean or replace the ground wire. It sounds very much like a bad
    ground at the tail light to me.

    Harvey

     


  5. #5
    GG
    Guest

    Re: accessing relays behind fascia panel in late-1982 C900 - how?

    Had exactly the same probs... fixed it using the instructions on the
    following link;

    http://www.andrewsofprinceton.com/service/tech_tips/nov.html

    good luck.
    Gwilym.


    "Craig Ian Dewick" <apana.org.au> wrote in message
    news:buiq5h$p43$apana.org.au... 

    middle 
    again. 
    the 
    on 
    http://lios.apana.org.au/~craig 
    POP). 
    world 
    NSA.



  6. #6
    Craig
    Guest

    Re: accessing relays behind fascia panel in late-1982 C900 - how?

    MeatballTurbo <com> writes:
     
     

    This could well explain why the donor car I've been comparing the wiring in my
    car with has a bolt and a replacement ground wire going to the rear earth
    point... Each rear light cluster in the donor car has one actually.
     
     
     

    Sounds complicated but now I know where to look for all the securing
    devices, I should be able to work out how to make it happen! I'll check our
    the earthing issue first though as that's a lot simpler to take care of.

    Craig.
    --
    Craig Ian Dewick (apana.org.au). http://lios.apana.org.au/~craig
    APANA Sydney Regional Co-ordinator. Operator of Jedi (an APANA Sydney POP).
    Always striving for a secure long-term future in an insecure short-term world
    Have you exported a crypto system today? Do your bit to undermine the NSA.

  7. #7
    MeatballTurbo
    Guest

    Re: accessing relays behind fascia panel in late-1982 C900 - how?

    In article <buqv6f$kkn$apana.org.au>, apana.org.au
    says... 
    I've been lucky, apart from soome reversing light issues (and an
    indicator that stopped working on the day of the MOT, but was just a
    loose bulb rather than a failoed bulb), my rear clusters have been fine.

    The dash isn't two tricky.

    What is difficult the actual Dashtop/instrument cluster. Thats why a lot
    of jobs get done through the speaker holes. I've got a dash bulb (the
    one for the fuel/boost/temp gauge) out and it is a real git to try and
    get a grip on it to twist it, without being able to see where you are
    going.
    --
    The poster formerly known as Skodapilot.
    http://www.bouncing-czechs.com

  8. #8
    The
    Guest

    Re: accessing relays behind fascia panel in late-1982 C900 - how?

    "GG" <com> writes:
     
     

    Thanks for all the tips. I agree it seems like an earth problem so I'm going
    to fix it today. My donor car already has additional earth wires added for
    both rear light clusters so whoever owned that car in the past must have
    experienced the same sort of problem.

    Craig.
    --
    Guru Will Sellit! ** 'sunrk' on Ebay ** | Get Back on Track at the Sun Shack
    Craig Dewick - aka the one4sun! | www.sunshack.org or www.sunshack.net
    Main info website at www.one4sun.org +-------------------------------------
    SRK's Ebay Shop is now available at www.ebayshops.com.au/sunripenedkernels

  9. #9
    Craig
    Guest

    Re: accessing relays behind fascia panel in late-1982 C900 - how?

    "Mike P in Brazil" <com> writes:
     

    Fixed it today. Was an earth problem. Actually I found that one of the
    previous owners of the car has really stuffed a lot of the wiring since many
    of the non-factory wiring for the sound system, etc. has wire joins which
    are not soldered and simply twisted joins with electrical tape to prevent
    shorts against the chassis!

    This is something I abhore since it smacks of the person having no clue how
    to make proper connections and perform wiring tasks so the wiring joins are
    reliable and safe for as long as possible.. 8-)
     

    Judicious cleaning of the earth points (something else I did as well as
    installing new earth wires for both rear light clusters) will help too.

    Craig.

    --
    Craig Ian Dewick (apana.org.au). http://lios.apana.org.au/~craig
    APANA Sydney Regional Co-ordinator. Operator of Jedi (an APANA Sydney POP).
    Always striving for a secure long-term future in an insecure short-term world
    Have you exported a crypto system today? Do your bit to undermine the NSA.


 

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