On a 2000 Focus, both the driver side and passenger side have clip that hold the bulbs in place. Unscrew the cap to access the bulb and clip. Pull off the three pronged electrical connector and locate the top of metal clip. Push forward and then down. Then swing the clip back and remove the bulb. Reverse process to install new bulb. On the passenger side. Remove the coolant reservoir(one bolt) and push towards the engine. Unscrew cap, unplug three pronged connector from bulb and push the metal clip forward, then down and back. It's a lot easier to see this process on the passenger side with the coolant reservoir removed. Less than 5 minutes for both bulbs.
Are you asking how to replace the entire headlight assembly -OR- how to replace just the headlight bulb? Just the bulb.
autozone.com repair info
How do you replace a 1999 Ford Escort headlight bulb?"
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How do you replace a 1999 Ford Escort headlight - could use a picture.
How to replace right from headlight bulb on 2000 ford contour 4 cyl...?
please show diagram how and where the driving side headlight to replace? bulb.#9007 please show diagram how and where the driving side headlight to replace? bulb.#9007
2006 Ford Focus headlight bulb lamp replacement: Purchase the correct replacement headlight bulb(s) first, before disassembling the vehicle. See sources and related links below for replacement bulb information. Then consult your owner's manual for the headlight bulb lamp replacement procedure. As simple as it sounds, the owner's manual is the best place to start for bulb replacement instructions and illustrations. You may want to consider replacing both left and right at the same time in order to keep brightness and color equal (optional).
Look to the back of the headlight assembly. There will be a round sleeve where the wiring goes into the headlight. Twist this counterclockwise to turn the head light bulb assembly. Pull back on the assembly to remove it from the headlight casing. Replace with new headlight bulb.
Replace headlight bulb only when blown.
There are two metal clips behind the each headlight. Pull these upward, and the entire headlight will come out very easily. To replace the bulb, do so without touching the glass parts of the halogen bulb,and replace the headlight. Secure with the two clips. See, it was easy.
Remove four push clips for the grille, then pull gently forward to remove the grille assy. Then remove Three 10mm headlight holddown bolts ,wiggle the headlight assy in an upward way until it popps out of it,s retainer clip. Remove headlight bulb in a counterclockwise manner, replace bulb. reverse removal procedure. EST time approx 5 minutes