2001 ford focus headlights

SOUNDS LIKE LOOSE DASH CONECTOR CAUSING POWER LOSS
AND SWEEPING GAGE WHEN POWER RETURNS

Did you change the turn signal switch?

more than likely a fuse or a relay is bad. locate the fuse for the headlights (owners manual) and check if it is bad, if the fuse is good, find the relay and give it a flick or two and try the headlights then, if they work, its time for a new relay

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Turn the engine off, open the hood, and disconnect the negative battery cable (--) with your pliers.

Locate the power distribution box against the firewall on the driver's side of the engine compartment. Flip up the latch and remove the plastic cover.

Determine which headlight fuse you want to replace. The 2001 Ford Focus uses four headlight fuses--one for each headlight. Fuse number 16 is for the passenger side low beam; fuse number 17 is for the driver's side low beam. Fuse number 26 is for the passenger side high beam; fuse number 27 is for the driver's side high beam.

Grasp the fuse with your fingers and pull it straight out of its mount. Insert the new fuse in its place. Replace the plastic cover and reconnect the negative battery cable.

Headlight Switch....or some call dimmer switch...you must remove steering wheel to complete job....part is around $110 at Autozone or Advance

This may help
Low Beam Headlight Bulb Size: 9003/HB2
High Beam Headlamp Light Bulb Size: 9003/HB2
Parking Light Bulb Size: 3157LL
Front Turn Signal Light Bulb Size: 3157LL
Rear Turn Signal Light Bulb Size: 3157LL
Tail Light Bulb Size: 3157LL
Stop Light Bulb Size: 3157LL
High Mount Stop Light Bulb Size: 2825
Fog/Driving Light Bulb Size: 899
License Plate Light Bulb Size: 6418
Back Up Light Bulb Size: 3156LL
Front Sidemarker Light Bulb Size: 194
Map Light Bulb Size: 3886X
Dome Light Bulb Size: 6411
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fuel pressure should stay high after car is turned off for 60 sec at least then stay sort of high for some time after that

there are more wires that you cannot see that are melted that is causing the problem. trace all of your wires, starting with the license plate light, all the way to the headlights

Hi,, replace the right side bulb at the light , you replace it by the inside ,(hood open) that should do it ,...good luck....