Problem: dash lights not working.

I checked the fuse under the hood, ok.

Under the dash is a small (1.25 inch x .5 inch) black fuse looking thing. It has the number 009 545 14 28 on it. is this a fuse? All it has is a small silver metal post about a 1/2 inch long sticking out, not like any fuse I have seen. If it is a fuse, how do I check it? What else could be the source of my no dash light problem? Rerheostat?

Thanks You

I only found this site a few days ago and already it has been a great help!

1985 300D