Datatool alarm tell tail LED dim?

Discussion in 'Motorbike Technical Discussion' started by wigg, Aug 28, 2005.

  1. wigg

    wigg Guest

    Datatool series 2 alarm telltale LED is very faint,
    I thought it was not working at all but in the dark its there flashing JUST.
    That after replacing the LED itself.

    Voltage getting up there but no current.
    Full 11+ volts open circuit but voltage drops away
    if LED in circuit.

    The unit is tucked away in the tail section of a BMW K1100RS.
    and a fag to get out although on a single big plug.

    Any BRIGHT ideas?

    wigg, Aug 28, 2005
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  2. wigg

    Kevin Ricks Guest

    Not clear what you did or are trying to do??
    Do you have a resistor in series with the LED? If not the LED will act
    almost like a dead short and probably burn out. Or maybe you replaced with
    the wrong LED, they are not all the same. The resistor has to be chosen
    specifically based on voltage present and nominal current draw of the
    particular LED.
    Kevin Ricks, Sep 6, 2005
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