Indicator switch

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  • 6th January 2023 at 9:55 am #31335
    Paul Hewitt
    Participant

      Hi could anybody help with a wiring diagram for the indicator switch on 54 model? The diagram in the files doesn’t seem to show the switch terminals. I am trying to carry out the led conversion but struggling to figure out what to wire it up to on the switch without a diagram. Somebody has previously added link wires between aome of the terminals so wondering if thats whats causing the issues? IMG_20230106_085059

      6th January 2023 at 9:59 am #31336
      Paul Hewitt
      Participant

        IMG_20230106_094906

        6th January 2023 at 4:12 pm #31337
        Bernie
        Participant

          Paul,

          That does not look like an original switch to me.  It looks much more complicated with so many terminals, and that may be why some have been bridged.

          My experience is that there are usually only 3 terminals, marked + (power source), D (right indicator) and G (left indicator.  If there is a warning light there may be an additional earth contact.

          If nobody else comes up with a definitive answer and there are no obvious clues to the functions of the terminals, I suggest you experiment with a meter across various combinations to determine which does what.  Bon courage.

          B….

          6th January 2023 at 4:16 pm #31338
          Bernie
          Participant

            Just a thought …

            If the terminals are simply numbered, they probably comply with DIN standard 72552.  If so, this may help …

            https://en.m.wikipedia.org/wiki/DIDIN_72552

            B…

            7th January 2023 at 12:21 pm #31346
            Paul Hewitt
            Participant

              hi link not working

              7th January 2023 at 12:32 pm #31347
              Bernie
              Participant

                Paul,

                I’ve just clicked on the link and it worked here.

                I shall try to post an image of the relevant section.

                B..

                 

                7th January 2023 at 12:39 pm #31348
                Bernie
                Participant

                  Try this …..

                  DIN 72552 - WikipediaPDF_230107_123705

                  8th January 2023 at 12:43 pm #31352
                  Bernie
                  Participant

                    Paul,

                    Having enhanced your first photo, I can see:

                    • Terminal at about 2 o’clock is marked “R” so is likely to be output to right indicator(s)
                    • Central terminal marked “K” is most likely to be power source

                    I therefore assume :

                    • Terminal at about 9 o’clock is likely to be output to left indicator(s) but any is ID hidden by the wire.
                    • Top terminal with green lead is probably an earth (perhaps necessary for an integral warning lamp).  No idea why there is the additional red lead – what is at the other end of that?

                    I suggest using a meter to check for permanent live in centre and permanent earth at 12 o’clock.  Then see if the other two positions respond as anticipated when the switch is operated.  You will almost certainly need the ignition switched on for these checks.

                    B….

                    8th January 2023 at 12:47 pm #31353
                    Bernie
                    Participant

                      Thought no. 92b …

                      You might find the centre (K) is earth and the top (green lead) is power in and the latter has been tapped to feed something else.

                      B….

                      9th January 2023 at 9:31 am #31355
                      Paul Hewitt
                      Participant

                        thanks for the info

                        9th January 2023 at 7:02 pm #31356
                        Roger Grix
                        Participant

                          I am guessing it is a French car, so any comparisons with my 1955 L15 would be irrelevant.

                          Does it have more than 3 positions or any push/pull switching? Could allow for 4 light flashing if it does.

                          Roger G

                          26th January 2023 at 1:42 pm #31535
                          Dave Thornley
                          Participant

                            I believe mine is an original french one. Can actually open it up and see the gubbins inside. Not hard to figure it out using a multimeter.

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