All of the sudden the trouble light in the engine bay and the gauge lights quit working.  Can't seem to find any fuse that is blown.  Anyone know which fuse to check?  Are they both on the same fuse?  I had the main fuse box loose to check connections but everything seems OK.

If your gauge lights are out, look at the running lights. If those are out, too, it could be the fuse, combo switch, or a connector. If the running lights work, but the gauge lights don't, look at the dimmer switch on the dash.

To answer your original question, yes, they are on the same fuse. The particular fuse will depend upon the year of your Z. I suggest you add the year/model of your car in your signature so it's always in your posts.

I saw your post on another forum. It's the third fuse down on the left.