I just installed a radio in my 300zx and i can't seem to get any memory on the O.E.M. clock and on the radio clock maybe i wired it wrong maybe the device that stores the memory is broken or shorted if someone can help that would be great!

 

This is a basic question, but did you make sure the feed to the radio is hot even the car off?

 

if you have a test light or volt meter, you can check it.

 

i'm not really sure how to do that what do i do what am ilooking for and where can i get the tools?