You can find it under wheel well liner on the passenger side of the car. Altought it is not a hose is call Low-pressure A/C recharge port, which is on top of the receiver dryer (metal canister). Hope you can find it.
Where The Hose To Recharge The Ac On A 2001 Ford Focus?
If you take out the passenger side head light you can get to the recharge port.
