Hi everyone. I have a 2004 mondeo st220 estate and my drivers headlight went about a week or so ago and the passenger one went tonight. Can anyone tell me if there is a test that I can do to see whether it's the ballasts gone or what before I go spending the money on new headlights with ballasts and igniters. Any help will be great?

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Check the fuses & connections between the lights & loom.

Maybe a silly idea.. but would it be cheaper to fit an aftermarket HID Kit than to replace the OEM ballasts & ignitors (aren't they built into one unit?) ?

The fuses are OK replaced with new ones and all connections seem OK as well. Yeah the ballasts and ignitors are built into the unit.

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its not the bulbs is it?

its not the bulbs is it?

I just assumed he had checked :p

I have bought new bulbs and still don't work. When the lights are turned on the ballasts do not make a noise like they normally do

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Checked Fuses?

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It's new fuses in as well the old ones weren't blown but I changed them just to make sure

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Relays??

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Relay is fine just checked with swapping with one I know works.

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Possibly is the ballast then

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Odd that both go so close together bulbs makes sense but not so sure about ballasts. One way to find out is pick up a used one and fit it?

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I'm going to do power tests the weekend to try and narrow it down to ballasts, igniter or the actual headlight switch in the car.

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Pull headlight switch out , unplug connector and bridge pins 6 and 8 on connector with ign on, see if dipped beam works,

On the headlamp connector , the feed is pin 14 and earth 11

Ok will give that a go. Are the pins the same one with the switch being an auto one?

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They should be as the light sensor is the one that ultimately flicks the switch rather than you. So the electric still flows down the same pins

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Can I put on aftermarket hid kit with the lights being standard xenon lights?

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So can I fit a aftermarket d2s hid kit to a manufacture factory fitted xenon lights with no modifications?

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Assuming it's the same type bulb I don't see why not

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