Has any one managed to fit the brake low warning sensor and wireing to there car at all? 
Mine dont have any of the wireing or sensors at all!

@Stuart-h sorry no help to your question just a question.

What is wrong with just keeping an eye on the brake pad wear, as in you know how good the pads are, how many miles you do and when checking tyres etc look at the pads and discs and see who things are going.

Service the brakes annually maybe pre winter or post winter.