An Introduction to HID (High Intensity Discharge) headlights and a Ford Mondeo Application guide




HID Xenon lights are fundamentally different to conventional halogen bulbs which depend on a heated filament to produce light. Xenon HID lamps produce light by creating a high voltage ‘arc’ between two electrodes. This process causes the xenon gas contained in the lamp to ionize, emitting an intense bright light. This leap in bulb technology has been fitted to many high end new vehicles since the early nineties and has become more and more popular as over time its advantages have become more and more apparent. Have you ever felt that your lights are not bright enough to make you feel that you can see enough to safely proceed in low light conditions? I know I have, especially at this time of year with the daylight hours short and weather conditions poor. Xenon HID lights produce over 200% more light than regular halogens so Its little wonder that Xenon lighting Technology has been so well received and sought after. Its not only the brightness of light that improves vision the quality of the light is also a factor. Have you ever notice those prestigious looking white with a hint of blue headlights on high end cars? You may have even been fortunate enough to drive a car fitted with Xenon headlights. You would immediately notice that the reach of your low beam is greater and the cool daylight color quality allows you to give the attention to details you need to feel safe. If you have any questions on HID lighting for your vehicle please visit:



For vehicles that don’t have factory fitted HID lights retrofitting is a possibility and very easy to do. There are many HID conversion kits on the market and like most things thing you get what you pay for to an extent. A cheap Chinese made kit off “Flea-bay” Will not have the guarantees, warranties and overall quality that store would offer. But don’t let a fancy storefront fool you into paying too much for poor quality kits. Do your research, shop around and pay special attention to where the kit was made. In my experience Korea/Japan or Germany produce the highest quality HID products. With Germanys Philips/Hella and Osram being pioneers of HID technology closely followed by Asias Matsushita/Panasonic and Blesk. Other well-known and high quality parts are made by Valeo and Denso.

For some reason Ford has not embrace the trend to fitting HID Xenons on new cars! They fitted Xenon as an option to Focus SVT 2003-04 and on Mustangs as an option since 2008. To demonstrate how simple it is to fit aftermarket Xenons to your Ford I have put together this application guide. I will be fitting Blesk 5000k HID lights to a Ford Mondeo (2000) headlamp. You will need the following: 


Ø  Screw driver

Ø  Hand drill

Ø  24mm hole cutter

Ø  Monkey wrench

Ø  Small tube of silicone. Optional.


A) Remove the headlamp unit:


This is an optional step. On some models there is enough room to reach around the back of the headlamp unit from under the bonnet. The Mondeo probably had enough room but it can be fiddly and I prefer to work in the warmth and comfort of my workshop.




1)    Open the bonnet and unfasten the fixtures holding the lamp unit in:

a)    One on the top, this screw should be removed entirely.

b)    Another bracket is underneath the headlamp unit, the screw only needs to be loosened for the unit to side out

2)    The headlamp unit will twist out reveling two electrical connectors.

3)    Disconnect the connectors and the headlamp unit is free.





B ) Remove the existing H7 halogen bulb





1) Looking at the rear of the headlamp unit remove the plastic panel by lifting the metal clip securing it (This may be a circular panel that twists off on some models)

2)      Remove the electrical connection with a firm pull.





3)    Release the metal clip holding in the bulb by pressing and lifting upwards.

4)    Remove the bulb


remove halogens



C) Fit the HID Xenon Bulb




1)   Cut a hole in the plastic rear panel behind the position the bulb will be, about 24mm in diameter with a hole cutter and drill.

2)    Squeeze the rubber grommet into the hole in the panel. Make sure there is a tight seal and no gap. Its function is to prevent water entering and causing condensation inside the unit (I recommend sealing with silicon)




3) Connect the blue and black cables to the existing headlamp connector. (Blue/Red is positive and Black is negative)





4)    Place the rear panel back in position and secure with clip.



D) Replace headlamp unit and finish



1)    Replace and reconnect headlamp unit in vehicle and secure. (For the sake of this guides photos I skipped this step and continued the process in my workshop!)

2)    Connect up the cables between the lamp and the ballast. (There is only one way they will fit)





 3)   Find a safe spot to secure the ballast. Clean the area, stick down with double sided ballast pad (provided), and secure with cable ties (provided). (Silicone can also be used here as adhesive but is not necessary)  





4)    Change the existing light fuse to the 20AMP fuse provided.


        5) Turn on engine and operate headlight switch to test lights and enjoy HID Brilliance.





***Whist your in your headlight unit it may be an idea to change your change your dim Halogen wedge bulb with a Blesk cool White LED

led wedge 


Warning: HID conversion kits generate 22,000 volts so be careful of electric shock. It is recommended that the Kit is fitted by a professional.