What Is The Purpose Of This Wire | FerrariChat

What Is The Purpose Of This Wire

Discussion in '308/328' started by Lawrence Coppari, Nov 8, 2020.

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  1. Lawrence Coppari

    Lawrence Coppari Formula 3

    Apr 29, 2002
    2,149
    Kingsport, TN
    Full Name:
    Lawrence A. Coppari
    This is the rear of the speedometer of my '87 328 GTS. There is a connector that has what appears to be a metallic shielding. What is its purpose?

    I'm going to be sending the unit off to be repaired. How do I disconnect the shielded connector?
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  2. mike32

    mike32 F1 Veteran

    May 13, 2016
    5,828
    Isle of man- uk
    The wiring diagram for the 3.2 mondial shows 4 wires to the speedo, black, green strip white, yellow, red strip black
    If thats any help, that looks like it is brown which is not listed
     
  3. GordonC

    GordonC F1 Rookie
    Owner Rossa Subscribed

    Aug 28, 2005
    4,119
    Calgary, AB, Canada
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    Gordon
    #3 GordonC, Nov 8, 2020
    Last edited: Nov 8, 2020
    That's your trip odometer reset cable. It can't be disconnected from the back of the speedometer - you have to unscrew the thin nut holding the trip odometer reset knob to the instrument panel from the front side (at the base of the knob), then push the knob through the instrument panel.

    The reset cable with the knob remains attached to the speedometer when you send it off.

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  4. Lawrence Coppari

    Lawrence Coppari Formula 3

    Apr 29, 2002
    2,149
    Kingsport, TN
    Full Name:
    Lawrence A. Coppari
    Thank you GordonC.
     
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  5. miketuason

    miketuason F1 World Champ
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    Feb 24, 2006
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    Cerritos, CA.
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    Mike
    Is there a way to attach that to the odometer? :D
     
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  6. Brian Harper

    Brian Harper F1 Rookie
    Owner Silver Subscribed

    Feb 17, 2006
    4,078
    San Jose area
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    Brian Harper
    There must be. I don't know how to do it, but I do know there have been a whole lot of 35,000 mile 308s for sale for the last 15 years.
     
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  7. mwr4440

    mwr4440 Five Time F1 World Champ
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    Jun 8, 2007
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    Mark W.R.
    Those cables do come off the unit, but no real reason to do so.
     
  8. Lawrence Coppari

    Lawrence Coppari Formula 3

    Apr 29, 2002
    2,149
    Kingsport, TN
    Full Name:
    Lawrence A. Coppari
    I sent the speedometer/pulse generator off to Palo Alto Speedometer this morning. Hope all goes well there.
     
  9. david bentley

    david bentley Karting

    Jan 2, 2004
    182
    Saint Louis Mo US
    Full Name:
    David bentley
    Polo Alto has always done good work for me
     

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