Hard wiring power for USB device behind dashboard in Fiat 500?

[charliebobgordon]

Hi there, I've just got a USB FM transmitter gadget that I'd like to hide behind the dashboard of my Fiat 500 somewhere and then power it. How can I do this? I've found this

I have literally no experience doing this but I'm willing to give it a go! I've found this DC 12V to 5V inverter with a female USB adapter, is this what I need?

Also, I have a black box in my car which is no longer activated, would it be easier to just to remove that and then just use the power for that?

Any suggestions helpful, thanks!

 

[charliebobgordon]

Have I put this in the correct forum?