any ideas how you can make the "clicking" noise louder on the flasher unit?
Auot electrician had a look but said unit seems to be in big box, he was afraid to open it?
I take it you also have a problem hearing the indicator. (I am a bit deaf - married too long! 
). I looked at it and decided it would be a lot easier to put either a beeper (maybe annoying at a slow robot) on the live feed to the indicators or maybe a second loud / cheap indicator unit fitted outside of "the box" purely for the audible click.
). I looked at it and decided it would be a lot easier to put either a beeper (maybe annoying at a slow robot) on the live feed to the indicators or maybe a second loud / cheap indicator unit fitted outside of "the box" purely for the audible click.