Radio not getting power

I just bought a 02 4Runner and the only issue I can find on it is the radio not working. The head unit doesn’t seem to be getting any power at all. I’ve swapped out the 15A fuse in the interior box and that didn’t do anything. Short of replacing the head unit can you guys think of another fix?

 

Use a test light or multimeter to ensure you get power from the wires themselves.

Always troubleshoot the easiest methods first.