Hi,
Presumably you’re asking about the radio in a Ford Thunderbird, is this correct?
What is the year model of your vehicle?
Have you checked if fuse #11 in the engine bay fuse block is OK?
Here’s a link to a Ford Thunderbird [https://www.manualslib.com/manual/596902/Ford-Thunderbird.html?page=171#manual|owner manual] showing the fuse allocations in the engine bay.
This [https://www.manualslib.com/manual/596902/Ford-Thunderbird.html?page=169#manual|link] shows the location of the engine bay fuse block