W202 C180 Indicators keep blowing the fuse

[Cush]

Hi,
well title says it all really, this is wifes daily driver and has started to blow no1 fuse the 7.5 brown one every 3 or 4 days.
Not sure if something else is triggering this issue but wife says she has not used any other instruments..wipers or anything that could cause issue.
I know the first time it happened one of the flasher bulbs had been playing up and finally blown but she says bulbs are fine now.
Just thought I would ask advice and see if anyone has had similar problem before pulling the car apart.

 

[Flyinspanner]

Maybe check the wiring of the bulb holder which blew. Wire may be cracked/nicked/damaged and has an intermittant short to earth?

 

[Cush]

Thanks, will have a look and see. Gives me somewhere to start.