The only difference between the mk 6 brake lights and the facelift brake lights is that the facelift lights have 2 reverse lights and 2 fog lights as opposed to the mk 6 prefacelift having a fog light one side and a reverse light on the other (See wiring diagrams). **Please note that there is a difference between the 3 door and 5 door versions of the brake light so make sure that you order the correct light units for your car**
Basically you need to buy the light units, the bulbs holders, new gasket seals (http://www.fordparts...17734_c_341.htm), a bit of 2core wire and detachable connecter plugs (http://www.autoelect...t/39/category/7 [9 terminals product code 051305])as the facelift lights are different from the original and try and get hold of a couple of push lock clips.
(same clips as at the top of the original prefacelift lights).
I got the lights/bulb holders/gaskets and push lock clips i needed from http://www.fordpartsuk.com/ (you may need to go to the parts request section of the site for the clips and bulb holders https://www.fordpart...artsrequest.htm) and managed to get the connector plugs from here ( [9 terminals product code 051305]).
You need to run the 2 core wire between the two sets of lights wiring up the connector plugs with the additional wires, wired in with the corresponding reverse/fog light on each side and tuck the wire behind the plastic just behind the boot carpet, and the wire each plug up the same as i have done so in the wiring diagrams (I applogise for poor quality diagrams I've never attempted to make one before lol)
(This is the type of connector plug that i used)
Insert the push lock clips into the holes at the bottom (these are required as the facelift lights do not have the additional rod/wingnut in the boot to secure the lights into place) and I also applied a new seal around the hole for the wires at this point to prevent water ingression-someone had fitted a massive seal and siliconed it before which actually made it worse hence the reason for all the scratch marks as i had to removed the old silicone before fitting the new seals
Connect the plugs and push the lights into the clips and secure into place with the 2 screws.
The 2 bits hilighted in the picture push into the 2 clips on the car also pictured is the bulb holders (wiring harness) required.
I hope this helps anyone wanting to do this conversion as it is realy simple and great looking modification to make on the prefacelift model as the factory fitted lights aren't that nice. Just wanting to clear up any confusion as Ive looked all over for how to do it myself and theres nothing lol but it definately is possible and if you're not confident with wiring it shouldnt cost more than £20-30 to get an auto electrician to wire them in for you. If anyone has any questions, please feel free to contact me http://www.fordowner...48-dangersford/
Id recommend purchasing a set of Cree w5w 501 reverse lights (http://www.amazon.co...t/dp/B00B4QHG7O)
and also a set of silver vision indicator bulbs to prevent you getting the fried egg effect :) (http://www.autobulbs...ator-bulbs.html)
I appologise for the wiring diagram quality I've never tried to make one up before lol. Hopefully its of use to you.