My system won't load a disc and the screen doesn't turn on. I have a fuse tester and all the fuses under the dash by the driver's door are fine, but I figured there might be more fuses somewhere else. If not, is there a place to check the power connection for the navi system?

Thanks.

 

You could get a copy of the service manual from over on the 350z Wiki. In the service manual, you will find the wiring diagram for the navigation system, and you may be able to track this down.

Also note that there are more fuse blocks. There is one behind the battery, and I think one other one as well. I'm sure if you search, you will find directions to find them.