Dodgy left front indicator only pulsating not flashing

[Mmoore]

Hi could I have some help please!!!
Car has failed mot and until we can figure it out im out of a car! I have an audi a3 2014. 

My car has an unusual fault. Some time ago my passenger front headlight bulb went. New one purchased and fitted. Not sure if this has caused my issue as only just noticed it due to mot fsil. My left front indicator only pulsate rather than flashes (thats what is failed on) 

We have tried my other bulb in the unit and it does exactly the same. My partner has checked the earth and its fine. When pulsating its dropping to 9 volts and then back up to 12volts. Its not shutting off completely!!!

Any ideas would be greatly appreciated 🙏🙏🙏🙏 Need my car but until fault found I cant pass my mot! 

Edited August 13, 2023 by Mmoore

[alpha omega]

its worth a check i had a pulsating winker once and it turned out that another winker bulb was at fault.you never know.hope you get it sorted soon regards