Where can I buy turn signal lense?

Before doing bhlm my turn signal lenses was melting. But I decides to keep it. Then the turn signal lenses fell out. So I glued it in nd it looked like crap so after 9 hours I got it back to normal and the lenses fell out again.
So my question is where can I buy turn signal lenses? Clear ones if possible.

I've looked on eBay and I can't find any without buying the whole headlight housing. And I'm sure this has been asked before and I used the search button. But I'm on my phone and its becoming a hassle.

 

Anyone?

 

Just look for light housings for sale that are broken, cracked, etc. and being sold for parts...they are out there