Damaged indicator strip

Hoping someone can help me out here , i noticed today that the left hand side wing mirrors indicator strip is damaged.

no idea how this has happened as nothings hit me and ive not hit anything, so im suspecting the rat bag kids on my part of the estate.

can anyone give me a link where i could pick up a replacement strip if that is possible? and a guide to repair myself. I'm a tech head by trade and the mech side of stuff isnt my thing but im willing to give it a go:)

Everything else is fine its just the tip of the strip has fractured and fallen away, so now as you can see in the picture it is starting to fill up with crud. it doesnt help that i live in a rural area with loads of muddy single laned roads.

Edited 24 August, 201213 yr by Jason157