pop/tick in dash - random

There is a pop/tick type sound from the dash at random intervals at all times when running. Sounds like its from behind where the heat/air controls are. Is this just another of the hidden bonuses I've had so far with my new 04?

It could be a wire that is not secured tightly hitting/tapping on something. What you can do, is pull the radio and take a look and make sure everything is snug.

That's not it.