Remove it.
Behind the glovebox hope this helps
in the glovebox
Go to NAPA and buy a repair manual for your specific car.
The Ford Focus ZX2 was produced from the years 1998 to 2003. The low end service port in a 2003 Ford Focus ZX2 is located behind the front of the right front tire.
behind the glovebox. glovebox needs to be removed
The 2003 Ford Focus has 16 valves.
The fan resistor on the Ford Focus is behind the glovebox. You need to carefully lower the glovebox so you can gain access to the motor, but this can be done without actually removing it, just prise it down gently. Once in, the motor is on the righ hand side as you look in, behind the centre console. Using a torch you shold see the original resistor in place and from here on it should be simple, if a little tight.
The 2003 Ford Focus is a gas-powered vehicle.
The 2003 Ford Focus has a 5-speed manual.
The 2003 Ford Focus has an inline 4 engine.
The 2003 Ford Focus runs on regular unleaded.
The 2003 Ford Focus is 14 ft. 0.1 in. (168.1 in.) long.