Lights on 1985 QV - won't come up - won't come on | FerrariChat
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Lights on 1985 QV - won't come up - won't come on

Discussion in '308/328' started by Hotzos, May 21, 2023.

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  1. Hotzos

    Hotzos Formula 3
    Owner Silver Subscribed

    Oct 19, 2004
    1,060
    Parker, Colorado
    Full Name:
    Mark Gomez
    #1 Hotzos, May 21, 2023
    Everything was working just fine - but a couple days ago, the lights quit working.

    Turn the knob; move the stalk, nothing - no lights on the front or back. Fuses; relays appear fine. (Have Birdman's fuse box.). Have swapped relays.

    While running a trouble light, i noticed if i touch a green wire at the connector under the steering column, everything starts working. But only when the car is off. If the car is running, and i touch the wire, the lights go up/down - alternating left/right.

    Everything else seems to be working.

    Any thoughts on solving this problem?
     
  2. Steve Magnusson

    Steve Magnusson Two Time F1 World Champ
    Lifetime Rossa

    Jan 11, 2001
    26,826
    30°30'40" N 97°35'41" W (Texas)
    Full Name:
    Steve Magnusson
    #2 Steve Magnusson, May 22, 2023
    Most likely something wrong with the rotating knob switch. When you rotate the rotating knob switch to "on" = it should close the ...006 relay (the only one with the "K" on it) = then the ...006 relay sends signals out to run the lamps. You can try just touching the ...006 relay with a fingertip while turning the rotating knob switch "on" to feel if it is actuating or not. Likewise, if you remove the ...006 relay and measure the voltage between the female 85 terminal in the relay socket and the female 86 terminal in the relay socket, it should go +12V when the rotating knob switch is "on" -- if not = justifies disassembling the rotating knob switch to investigate.
     
  3. Hotzos

    Hotzos Formula 3
    Owner Silver Subscribed

    Oct 19, 2004
    1,060
    Parker, Colorado
    Full Name:
    Mark Gomez
    #3 Hotzos, May 22, 2023
    Thanks Steve. I don't feel anything at the relay when i turn the switch. I was speaking with Bill Evander at Maranello Motorworks in Denver. He suggested one of the solder joints inside the switch may have apart.
     
  4. Jbrauer

    Jbrauer Karting

    Oct 12, 2016
    224
    Pasadena
    #4 Jbrauer, May 22, 2023
    Probably one of the wires under the rotating knob. Same thing happen to my car, easy fix.

     
  5. Hotzos

    Hotzos Formula 3
    Owner Silver Subscribed

    Oct 19, 2004
    1,060
    Parker, Colorado
    Full Name:
    Mark Gomez
    #5 Hotzos, May 23, 2023
    Wow....Thank you so much. I will attempt that over the weekend. It sounds exactly like my problem.
     
    Jbrauer likes this.
  6. Hotzos

    Hotzos Formula 3
    Owner Silver Subscribed

    Oct 19, 2004
    1,060
    Parker, Colorado
    Full Name:
    Mark Gomez
    #6 Hotzos, May 24, 2023
    well I found at lunch today and followed your video. Problem solved. Exactly as you said. Thanks so very much jbrauer.
     
    Jbrauer likes this.
  7. Jbrauer

    Jbrauer Karting

    Oct 12, 2016
    224
    Pasadena
    #7 Jbrauer, May 24, 2023
    Great news! Simple fix, nice to have lights again
     
  8. ronr

    ronr Formula Junior

    Oct 30, 2002
    813
    DFW, TX
    Full Name:
    Ron
    #8 ronr, May 24, 2023
    The switch was also the problem on my 308, which had just failed a few days ago - thanks!
     
    Jbrauer likes this.

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