348 Fuse box | FerrariChat

348 Fuse box

Discussion in 'Technical Q&A' started by C t wilkns, Jun 22, 2025 at 3:06 AM.

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  1. C t wilkns

    C t wilkns Rookie

    Jan 31, 2021
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    Chris wilkins
    Afternoon gents.

    I’m having some wiring / fuse box issues and wondering if any one had any knowledge on the fuse box located in the passenger footwell.
    The top row of relays all have the 12v power feeds on the 87 terminal and the lower row of relays have 12v power feed on the 30 terminal is this correct ?

    Photos attached. Thank you in advance. Manual isn’t the best. Image Unavailable, Please Login Image Unavailable, Please Login
     
  2. Qavion

    Qavion F1 World Champ
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    Nope!

    Miro @m.stojanovic posted this diagram for the 348, but knowing Ferrari, different years had different configurations:

    Image Unavailable, Please Login
     
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  3. Qavion

    Qavion F1 World Champ
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    Ooops... Sorry, misread your question... You were asking about 30 and 87, not the coil power pins.

    Again... anyone's guess unless Miro has a pinout
     
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  4. Qavion

    Qavion F1 World Champ
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    Can you work it out from this?

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    If the outer copper area is live, just see which pins are soldered directly to them, not the pins with green around them.
     
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  5. Qavion

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    #5 Qavion, Jun 22, 2025 at 6:37 AM
    Last edited: Jun 22, 2025 at 6:49 AM
    I've graphically flipped the circuit board to match up with your photo and added some relay numbers

    Image Unavailable, Please Login
    This means the relays which have live pins which are closest to the edge of the board are:

    (left edge) A, B, C, D, E & (right edge) L, M, N, O, P & Q.

    The G pin closest to relay H is live
    H has no live pins
    The I pin closest to relay L is live
    F is anyone's guess.

    It probably would have been better if I turned the board to its natural (in-car) position. Do you have a left hand drive car or a right hand drive car?
     
  6. Qavion

    Qavion F1 World Champ
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    I have clearer colour diagrams than the pdf workshop diagrams if you need help with a particular issue.
     
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  7. m.stojanovic

    m.stojanovic F1 Rookie
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  8. m.stojanovic

    m.stojanovic F1 Rookie
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    This thread, because it is in the "Technical Q&A" section, does not show when I look at the 348/355 forum where I am normally logged-in so I was not aware of the topic. I could only see it through the "Alerts" since Ian mentioned me. It is probably better to post questions like this to the normal 348/355 forum section where more members will see it.
     
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  9. C t wilkns

    C t wilkns Rookie

    Jan 31, 2021
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    Chris wilkins
    Thanks for sending this through - much appreciated
     
  10. C t wilkns

    C t wilkns Rookie

    Jan 31, 2021
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    Chris wilkins
    This is perfect.
     

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