I am new here and it may be that this is not the place. However I found a LED reversing lamp for my daughters Twizy45 that also had a beeper build in for just under 10 EUR. (amazon.it has product number B078SQFH68 - searching for P21W beeping should get you the same )
However - I am not able to tell you how pronounced the sound is or the strength of the light is - because I found that the old lamp was working. I.e. there is something beyond my grasp as to why the old or the new does not turn on when I put the Twizy in [R]everse.
Does anyone know where the reverse-light is commanded from? It does not seem to have a fuse, or if it does it is not clearly labelled. I am starting to worry that it may be a signal from the Sevcon itself.
Again thanks for a nice community - please let me know if there is links or other places that could help me with my lack of reverse light.