sunroof issues

[87esir]

I don't have power to my sunroof or at the fuse for the sunroof. If I jump power to the sunroof fuse the sunroof works fine. Why would I not have power to the fuse? Maybe the comfort relay? I took what I think is the comfort relay out (large black relay at left kick panel with blue writing) and took the top off and resoldered as I read is often a problem and this didn't fix the problem. Is there a way to check the relay. a schematic for doing it?

Also, how much is a sunroof switch. I need a new one because the outer part is broken off.

1994 318is