bumper up grade

i've a rangerover sport s 58 plate and have purchased a hse front bumper with the spots and washers on has any body else done this upgrade ? if so is the wiring loom the same ? can i just plug in and go ? i know i will have to change the light switch is that a case of just replacement ? is the wiring loom the same ?

If it's like the P38 you will have to get them programmed in.