The problem you have is are they E marked fo use in the UK?
This is a small circle with a capital E in it and a number next to it ( 11 I think)
If not and you are caught by plod or have an accident etc, your vehicle will not conform to the construction and use regs and you may well get done.
If you dont want lights in the rear bumper the late Vitaras has a legal version of these fitted not as fancy but less chance of any trouble.