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Digital Dash Info

Discussion in 'Electronics' started by ST165-2765, Apr 19, 2008.

  1. Rick89GTS

    Rick89GTS Well-Known Member Moderator Donated!

    Wow. Interesting project you have there. Takes dedication! Let us know how it works out.
     
  2. lone wolf

    lone wolf Well-Known Member Donated!

    really wondering how you make this work as I tried and failed first time :(
     
  3. Dman_23

    Dman_23 Guest

    Good to see you're making progress on this. Glad I could help.
     
  4. ST165-2765

    ST165-2765 Well-Known Member Donated!

    Well its been a while since I looked at this ...... only 33 wires to figure out.
    [​IMG]

    When its all powered up there is signs of life. Unfortunately its not iluminated, you are only seeing
    some sort of reflection from the overhead flourecent lights. When I turned the lights of to get a picture
    all the digital stuff disappeared. !@#$%!
    [​IMG]

    Everthing does work though, I can switch between MPH & KPH & switch from Trip A & Trip B
    [​IMG]

    I tried everything I could think of to get ilumination for the digital display with no luck so as a
    last resort.....dissasembly
    [​IMG]

    I don't know why I was thinking LED's cause that would make a pretty weazzy display.....the upside to
    that is that Liquid Crystal Displays are normally backlit
    [​IMG]

    The culprits. Who would have thought a handful of bulbs were all dead. They probably died one by one
    causing the digital display to get dimmer & dimmer until the last bulb failed rendering the digital display
    useless. That was probably the reason this celica went to the junkyard. You have to disassemble the
    unit to get at these lightbulbs and given the rareity of these digital units I'd bet the dealership probably
    never repaired one before and wanted to sell the owner a new cluster and with labour probably wanted
    to charge well over $1000 and the odometer on this unit is around 388,293km so it probably went to the
    junkyard because of a handfull of failed 12 volt bulbs......
    [​IMG]

    Once the bulbs were replaced. I have also grounded the temp sender wire to verify that that guage works
    [​IMG]

    The temp guage blinks when overheated so sometimes the picture gets taken when the temp display is off.
    The gas guage also flashes on/off but I'm guessing thats because its not getting a signal at all.
    [​IMG]

    I found an extra speedo cable so I hooked it up to my drill (this is probably what Mafix see's when he drops
    the pedal in Nemesis).
    I don't have any way of generating a pulse or else I'm sure I could get the tach to rev up too.
    [​IMG]


    Sorry for the blury picture but at 172 MPH things things are suposed to be blury
     
  5. mifitso

    mifitso Guest

    that looks pretty cool, id like to see it in action like a 0-60 or something.
     
  6. lone wolf

    lone wolf Well-Known Member Donated!

    so there is some hope for me? :)

    When I have some more time (winterperiod or so) I will try it as well :).
     
  7. Alwayzsidewayz

    Alwayzsidewayz ST162 Guru Donated!

    good dedication to the cause!! love the retro looks!
     
  8. Celic_GT2

    Celic_GT2 Well-Known Member Moderator Donated!

    go dave :) you see everyone, having no life gives you benefits hahah cant wait to see it in the trac buddy.
     
  9. ST165-2765

    ST165-2765 Well-Known Member Donated!

    Yeah its rough................

    Monday I got my junker camry out of the garage and moved my celica in then I went fishing (15 pickerel, 2 catfish)
    Tuesday & Wednesday I work on the digital dash and other celica related projects
    Thursday went shopping and then I went fishing again (5 pickerel, 4 catfish, 1 small mouth bass).
    Tomorrow I'm going fishing again

    Jealous yet ?
     
  10. ST165-2765

    ST165-2765 Well-Known Member Donated!

    Well probably not :( ................

    but there is hope for your Celica and the chances of it one day having a digital dash.
    I'll do a summary of what the wires on the 3 plugs are for and any other info I discovered
    and you can allways pm me with any questions you run into.

    CelicaSteve my apologies for outbidding you on this item but I allways liked digital displays
    I even made my own digital speedometer for an old chevy van I once owned.
    [​IMG]
     
  11. Celic_GT2

    Celic_GT2 Well-Known Member Moderator Donated!

    hahahah yeah i guess i am, keep up the "hard" work man. lol
     
  12. kevinkyang

    kevinkyang Well-Known Member Donated!

    wow that is nice! i wish i had one of those too! had a chance at one on ebay at one point but didnt take it. now i regret it so
     
  13. Seank90

    Seank90 Well-Known Member Donated!

    what are the odds of coming across one of these??? :?:
     
  14. kevinkyang

    kevinkyang Well-Known Member Donated!

    slim to none. they pop up every century or so. really hard to find
     
  15. Seank90

    Seank90 Well-Known Member Donated!

    hmmmm what model did they come off??
     
  16. CelicaSteve

    CelicaSteve Well-Known Member Staff Member Super Moderator Donated!

    Love these myself, it"d be like driving a spaceship at night! These were in Japan only I think.
     
  17. kevinkyang

    kevinkyang Well-Known Member Donated!

    yea sean. i saw it somewhere on this site. its on the cover of a celica handbook. it looks soooooooo cool
     
  18. MJH987

    MJH987 Guest

    Kudo's! You have put a lot of effort and time into this. And let me tell you, that guage = bad ass! It really does look fantastic! Wished my car came digital.
     
  19. eNtraxGT88

    eNtraxGT88 Well-Known Member Donated!

    dave, when testing the unit outside the car, which ones in A plug did you hook up to positive and I assume that A9 is the only ground

    also, i've checked my bulbs and they were also all f'd, so i changed them, but they still don't light up. i've only plugged in all of digital plug A to my existing harness, from what i see in the circuits, i shouldn't need digital B, C and D to have the LCD screen light up correct?
     
  20. ST165-2765

    ST165-2765 Well-Known Member Donated!

    I think you can get the lighting working by grounding A9 & A11 and +12V to either A3 or A12
    but not both. One gets 12 volts and the other just gets terminated/unused. When you apply
    12 volts to both the ilumination goes out. I think A12 gets 12 volts and A3 is unused.

    Heres some more diagrams

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]
     

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