1990 GT Convertible - Top or Window Question

[Jaybirdy2k]

1990 GT Convertible
I know its hard to see in the pics.. I guess it either works the top or side windows.
These 2 white belts are cracked and worn out. What are they for and who sells them? First foxbody I have ever owned.
And any install help would be appreciated

 

[89ripper]

I tried looking up convertible parts and i did not find what those belts are....are you able to tell if they move whether you operate top or windows?

 

[90sickfox]

There shouldn't be belts. Not sure what those are and i work on a lot of convertibles.