What's up,

I was wondering if anyone could tell me how to take my Bumber off so i could install my new halo headlights. This is what happend i got brand new halo lights i got them installed but the left side halo does not work. I spoke to the guy who sells them and hes said just ship him the old and he will send me a new one. Problem is there in already and if i want to take them out the guy will charge me to take them out and then charge me again to install them. I seen him install them and it looked simple, the only thing is i did not know it how he took off the bumper if someone could help me i'd appreciate it.