355 - F355. Intermittent dim light | FerrariChat
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355 F355. Intermittent dim light

Discussion in '348/355' started by Klas, Mar 20, 2022.

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  1. Klas

    Klas Formula Junior

    Mar 17, 2014
    364
    Gothenburg, Sweden
    Full Name:
    Klas Nilsson
    #1 Klas, Mar 20, 2022
    My most left light bulb (of three bulbs) to the speedometer is flashing intermittent or does not light at all. Bulb is ok so it’s bad connection somewhere. When this light bulb is dead it can sometimes help to turn light switch off and then on again and this bulb might light up again. Sometimes that trick does not work. Suggestions?


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  2. Qavion

    Qavion F1 World Champ
    Silver Subscribed

    Feb 20, 2015
    14,262
    Sydney
    Full Name:
    Ian Riddell
    #2 Qavion, Mar 20, 2022
    Have you interchanged the lamp holders or cleaned the copper contacts on the circuit board and the copper strips on the speedo main connector?

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    Does the bulb behave in the same way if you have your dimmer knob at a higher level?

    Do you have an airbag? Don't put power on the instrument binnacle if you have any plugs disconnected.
     
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  3. Klas

    Klas Formula Junior

    Mar 17, 2014
    364
    Gothenburg, Sweden
    Full Name:
    Klas Nilsson
    #3 Klas, Mar 22, 2022
    The bulb behaves the same independent of dimmer pos. Cleaned cupper contacts as well.
     
  4. Qavion

    Qavion F1 World Champ
    Silver Subscribed

    Feb 20, 2015
    14,262
    Sydney
    Full Name:
    Ian Riddell
    #4 Qavion, Mar 22, 2022
    Have you replaced any bulbs yet? I've had problems before where the contact point on the bulb itself is slightly worn. It may work in one position, but not another.

    At this point, I can't figure out what's going on.
     

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