LS Focus Fog light question

[chaosdog]

Hi, I've just bought a LS CL Focus as a runaround and a bit of a toy and I'm interested in fitting front fog lights to it.

I've been looking at the usual Chinese parts and kits on eBay but I came across this genuine kit on ebay UK http://www.ebay.co.uk/itm/Ford-Focus.../192110588979?

I'm wondering how plug and play this would be? Would there still be wiring to do? I can't see a relay, so I'm assuming I'd have to fit a factory relay in the appropriate slot.

I notice the supplied factory switch which replaces the standard one has a levelling control on it but I gather that it simply wouldn't work.

Any advice? Should I look at this (I like the idea of it being factory) or should I just go for one of the aftermarket kits?