Fred,

First question is, Did they both stop working at the same time?

These visors on convertibles are very problematic. The tend to break at the mounting point near the rear view mirror. If you look carefully you will see what I'm talking about (if this is the problem).

There is good news, sometimes this can cause the fuse to blow, and prevent both from working. However you need to replace the visor if this is the case.

B