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Mondial 3.2 Odometer / Trip / Dash Light Rheostat

Discussion in 'Mondial' started by jkstevens2, Nov 5, 2018.

  1. jkstevens2

    jkstevens2 Karting
    Silver Subscribed

    Aug 25, 2015
    116
    Winter Park, FL
    Full Name:
    JK Stevens
    The previous owner of my 1986 Mondial 3.2 kept this Ferrari in a barn out in the country. It wasn't a barn find. I received "for sale" pictures showing it on the farm. When I was doing the timing belt change I pulled off the lower skid plate that protects the gas tanks and found the dead carcass of a field mouse.

    I have not had any electrical problems until about 6 months ago, my dash lights stopped working and so did the fog lights. The rheostat is non-fuctional.

    Opened up the dash to find the wires on the back of the odometer have been chewed on. The insulation is gone and I am concerned that some of the wires may have shorted out and burned up the rheostat. I am thinking the printed circuit board for the rheostat is fried. Does anyone know of someone that rebuilds these components?

    I checked the fuse for this circuit and it has not burned out. The fog lights and the license tag light are also on this circuit and they do not work as well.

    Thanks for your help,
    John
     
  2. AndruL

    AndruL Rookie

    Apr 4, 2018
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    Full Name:
    AndruL
    Can you post pictures of the PCB in question?
     
  3. stekkefun4

    stekkefun4 Formula 3
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    Nov 22, 2006
    1,952
    Belgium - Europe
    Can you show some pictures of the damaged parts? I have everything available for all Mondial types.
     
  4. jkstevens2

    jkstevens2 Karting
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    Aug 25, 2015
    116
    Winter Park, FL
    Full Name:
    JK Stevens
    Thank you, I will get some pics and upload them for your review!
     
  5. jkstevens2

    jkstevens2 Karting
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    Aug 25, 2015
    116
    Winter Park, FL
    Full Name:
    JK Stevens
    Here are some pictures of the back of the Veglia odometer / trip odometer box with built-in rheostat for dash light dimming control. You can see small nibble marks on the wire insulation.
     

    Attached Files:

  6. AndruL

    AndruL Rookie

    Apr 4, 2018
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    AndruL
    With this off, do the fog lights and license plate light work now?
     
  7. jkstevens2

    jkstevens2 Karting
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    Aug 25, 2015
    116
    Winter Park, FL
    Full Name:
    JK Stevens
    That's a good question. I did not think to try those lights with the box disconnected.
     
  8. AndruL

    AndruL Rookie

    Apr 4, 2018
    48
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    AndruL
    Try that and if they are working then your problem is localized to just this box. Otherwise you still have problems in the car wiring elsewhere.
     
  9. srephwed

    srephwed Formula 3
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    Apr 29, 2012
    2,272
    street,md
    Full Name:
    fred brown
    There is a clause in my insurance policy stating they will not pay for damage caused by varmits or rodents.
     
  10. spicedriver

    spicedriver Formula 3

    Feb 1, 2011
    1,278
    The fuse box connectors can cause problems like this. Remove the connectors and clean the contacts. Make sure the connectors are tight. They can become bent open, but you can bend them back to ensure a good connection. The dimmer control is brightest in the counterclockwise position. Make sure you don't have it turned off.
     
  11. jkstevens2

    jkstevens2 Karting
    Silver Subscribed

    Aug 25, 2015
    116
    Winter Park, FL
    Full Name:
    JK Stevens
    OK I will look into this. Thanks for the input.
     

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