Car: 2004 A6 Allroad.

My indicators are all working but the "right" green indicator which flashes on the dash when the right indicators are going is not working properly, in daylight it appears not to flash at all but it is actually working but very very faint - occasionally it does the odd flash at full brightness.

the left indicator on the dash is working normally.

Any ideas? I am wondering if rather than an actual dashboard problem maybe there is a connection issue/resistance issue somewhere so the dash is not able to detect that the indicators are flashing. Any help from anyone?