Side mirror lights

Would appreciate help on this one.My right side mirror light/indicator is not working ,have brushed side of garage wall with it, lucky just a graze on the light.Looking at my book there is no mention of these lights apart from calling them side lights.How do you get to the bulb/led? Thanks.

If its on the mirror its probably the indicator, and if its a fl model then its one unit, you have to take mirror apart to get to it, but its pretty simple to change over and can get cheap units on ebay