348 - How to reset clock and instrument lights out | FerrariChat

348 How to reset clock and instrument lights out

Discussion in '348/355' started by Richard R Gallagher, Feb 16, 2020.

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  1. Richard R Gallagher

    Richard R Gallagher Rookie

    Mar 25, 2018
    3
    Full Name:
    Richard R Gallagher
    #1 Richard R Gallagher, Feb 16, 2020
    Greetings,

    How to set flashing clock?
    I have a 1990 348 GTS. Recent engine out service. I can't get the clock to set. I just keeps flashing. Pressing the A and B buttons doesn't seem to have an effect. Is there a reset button? if so, where?

    How to get instrument lights to operate?

    I can't get the panel or tunnel instruments light to turn on. Any thoughts?

    Submitted by a perplexed and frustrated naïve.
     
  2. asgor

    asgor Formula Junior

    Sep 8, 2016
    705
    Virginia, USA
    #2 asgor, Feb 16, 2020
    You need to press the A and B buttons on the clock using a pointy object like a jeweler's screwdriver or similar. Using just your fingertips isn't sufficient.

    As for the instruments lights, turn the small knob/wheel protruding from the tachometer. If that doesn't work, then it could be a fuse (or a hundred other reasons).
     
  3. Qavion

    Qavion F1 World Champ
    Silver Subscribed

    Feb 20, 2015
    11,555
    Sydney
    Full Name:
    Ian Riddell
    #3 Qavion, Feb 16, 2020
    Last edited: Feb 16, 2020
    +1

    As Asgor suggests, the problem could be a dimmer potentiometer. They develop dead spots. Try rotating it to a different position. I believe they are no longer available new and horribly expensive on the second hand market. Ferrari part number 134406

    Is your "parking lights on" indicator [P] working in the instrument binnacle? If it is working, then it's not a fuse problem. If is not working, then it could be fuse #10 in the passenger footwell.

    If your parking lights (themselves) are also not working, then we are talking about relays and other things. The instrument lighting system is like daisy chain going from one instrument to another on yellow-red wires. Let me know if you need a wiring diagram.
     
  4. Qavion

    Qavion F1 World Champ
    Silver Subscribed

    Feb 20, 2015
    11,555
    Sydney
    Full Name:
    Ian Riddell
    #4 Qavion, Feb 16, 2020
  5. Wade

    Wade Three Time F1 World Champ
    Owner

    Mar 31, 2006
    32,793
    East Central, FL
    Full Name:
    Wade O.
    #5 Wade, Feb 16, 2020
    A photo of your 1990 348 GTS would help.
     
  6. allandwf

    allandwf Formula Junior

    Aug 27, 2011
    267
    Scotland UK
    #6 allandwf, Feb 16, 2020
  7. Richard R Gallagher

    Richard R Gallagher Rookie

    Mar 25, 2018
    3
    Full Name:
    Richard R Gallagher
    #7 Richard R Gallagher, Feb 18, 2020
     
  8. Richard R Gallagher

    Richard R Gallagher Rookie

    Mar 25, 2018
    3
    Full Name:
    Richard R Gallagher
    #8 Richard R Gallagher, Feb 18, 2020
    Thank you so much for your insight. It took me a while to understand that a small tool needed to be placed in the A and B holes in the center of the "buttons" to set the clock. It sure works great now.

    As for the instrument panel lights, I used a circuit reader to test the fuses. It turns out that a fuse in the panel located behind the passenger foot area was the cause. That and I had to adjust the rheostat to adjust the panel light intensity that is located and sticking out from the tachometer.

    Thanks to everyone for great advise and suggestions. Brilliant insight. I am a better person for doing the stuff myself.

    Thank you,

    Rich
     
    steved033 and Qavion like this.

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