Down behind the engine by the firewall.
On a 2002 Ford Focus , 2.0 : firewall 1---2---3---4 front of vehicle > driver
between the motor and firewall under the intake manifold
The AC recharge valve for a 2003 Ford Focus with a Zetec engine is near the firewall. It is the larger of the two lines going to the compressor.
On the driver's side, under the hood by the firewall, there is a fuse box.
on the starter , which is between the motor and the firewall. and under the intake man.
Under the hood, by the firewall, in the main fuse box on the driver's side!!
the egr sensor is located on the engine compartment firewall next to the egr solenoid
Passenger side, near firewall, inside vehicle.
The main fuses are under the hood, by the firewall, in front of the driver's position.
Those heavier fuses are in a box, on the driver's side, up by the firewall.
Look for holes in the vehicle chassis. Do not attach to the bumper or the axel.