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Thread: dash guages and headlights not working

  1. #1
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    Default dash guages and headlights not working

    ok... Battery died a couple of weeks ago. After recharging, the following is happening.

    1. I have no headlights, low or high beam. All other lights are working

    2. All the dash gauge lights are working, but I have no coolant, fuel, speed or tach readings.. these are dead.

    Everything else on the car is running just fine. I've checked all the fuses and everything looks good.

    Is there anything anyone could advise on how to fix this.. or ideas on what to chase down to troubleshoot?

    Much appreciated

  2. #2

    Default

    According to the manual, your gauge problem may be the connector identified as INT14C. Here are the signals that pass through 14C:

    INT14C
    1
    ILLUMINATION
    GREY
    .75
    FUSE 1
    2
    TACHOMETER
    BLACK/GREEN
    .75
    RR03 PIN 3
    3
    FUEL LEVEL
    WHITE/GREEN
    .75
    RR09 PIN 1
    4
    IGNITION SUPPLY
    BLACK
    1.5
    FUSE 9
    5
    NOT USED
    6
    SPEED SIGNAL
    RED/BLACK
    .75
    RR13 PIN 2
    7
    COOLANT TEMPERATURE
    BROWN/BLUE
    .75
    RR03 PIN 1
    3
    EARTH
    BROWN
    1.5
    SPLICED TO INT15B PIN 2

    The harness diagram makes it look like 14C is near the steering column, but that's just a guess on my part. The pic below, taken from the manual, is for RHD cars. You need to flip left and right.



    If you're sure your light problem is not a fuse, open the clam and check the connectors near clam pivots (FT01 and FT02 in the harness pic above). They are Deutsch connectors that carry all the front lighting signals. Another possibility according to the manual is "relay C" in the passenger side foot well.



    Last edited by NobleM400; 12-21-2017 at 07:29 PM. Reason: pic of relay locations
    -------------------------
    Jeff
    Noble parts for sale, see my Noble website: http://Noblecars.org

  3. #3
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    Default

    Much appreciated Jeff. I’ll start backwards, recheck all fuses. Then start working forward from there. Thanks for the advice on the relay as well.

    Every thing worked fine until it didn’t. Assuming possibly startup while the charger was still on the battery could have caused a relay to fry?

  4. #4
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    Default

    Did you get this figured out? Please let the rest of us know, if so. Thanks!

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