Where is the aux input on 2007 Ford Focus?

The 2007 Ford Focus doesn't have a standard auxiliary input jack in the way many newer cars do. To connect an external audio device, you'll likely need to use one of these methods, depending on your radio's features:

* If you have a factory radio with a CD player and a connector in the back: There might be a connector in the back of the radio that allows for an auxiliary input. You'd need an adapter cable to connect to a standard 3.5mm jack. This requires removing the radio to access the back.

* If you have a factory radio with an optional satellite radio or CD changer connector: Some models had wiring harnesses for these accessories that might be adaptable to an aux input with a custom cable.

* Aftermarket Radio: The simplest solution is often to install an aftermarket car stereo that *does* have an auxiliary input (and likely many other upgraded features).

In short, there's no readily accessible aux input on the dash. You'll need to either explore options with the existing radio by investigating its rear connectors or consider replacing the radio with an aftermarket unit.