This is a guide for fitting the following Black Angel eyes. I wrote this, as i found the one's currently on the site to be missing quite important steps in certain places.
So hopefully this guide is a fairly complete walkthrough to removing the bumper and also fitting angel eye headlamps like the ones below.
I purchased these from the seller ultimate-lighting on ebay. Link >>
HEREItem Description:============
Vauxhall Calibra (1990-1998) Black Twin Angel Eye Projector Style Headlights
1 Pair of twin Halo Front Angel eye headlights fully 'E' marked, road legal and comply with UK & EU Regulations
Road legal - Your car will NOT fail an MOT with because of these lights.
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The Guide========
Removing the bumper
First remove the 3 x 8mm bolts holding the bumper to the slam panel.
Next remove the philips screw under each wheel arch that secures to the bumper.
Next remove the philips screw from underneath each side of the bumper that holds the bumper to the sub frame.
Note if you have the standard black plastic trim fitted on the underside of the bumper, you will need to remove the biggest end of this to reveal these screws. Or you may choose to remove this trim completely during this process... up to you.
Next, Assuming your bumper has never been removed before, you should have some plastic rivets still holding it in place (see below).
Use a small eletronic screwdriver to tap the middle retaining bar from the retaining clip. Repeat for all plastic rivets present.
The bumper should now be free to remove BUT just before you do, locate the temperature sensor on the passenger underside of the bumper and unclip it from the bumper.
You should now be able to remove the bumper. Once removed you should see the foam impact absorber (below) which you can simply pull off.
(Note the temperature sensor dangling down on the right)
Removing the headlightsThe headlights are attached by 3 x 8mm bolts (2 on top, 1 underneath).
The small bolt on the underside of the headlight is a real pain to reach. Undo the two top bolts first to give you some movement.
Some people take off the metal impact bar to reach the final bolt, but this is not easy either.
Tricky bolt !!!
The easiest way is to use an 8mm spanner (see below) and use the rounded end to undo the nut. Poke a finger between the gap and use this to apply pressure to turn the nut.
It should only take a couple of minutes to undo each bolt.
Remove the 3 connectors on the headlamp. Two are for the lights/indicators, the 3rd smaller connector is for the motorized headlamp adjusters. You probably wont have this on your new lights (I didn't)
Fitting the new headlightsOn the headlights i received, i had 2 pairs of wires coming from the halo's themselves, that i had to wire to the loom. Quite why these weren't already connected i have no idea, as the wiring needs to be done on the headlight itself.
Here's a picture of the underside of the headlamp, where you can see the halo wires, and also the spare wires coming off the loom.
You'll need to use some connectors to wire all of the white wires together, and all of the black wires together. You should end up with something like this:
Reconnect the indicator bulb and the main loom plug and test the lights BEFORE reattaching the headlamp.
If the main lights dont work, double check your wires in the connectors are making good contact (i had to redo one side for this problem).
Repeat process for Second Headlamp.
Now work in reverse order until you have put everything back together, hopefully with no spare screws.
And now some pictures 
Pre-Angel Eyes
Post Angel Eyes
Things to be aware of!!* Be aware that some (maybe all) of these aftermarket angel eyes do not have the motorized headlamp adjustor mechanism. I didn't realise this until afterwards.
* The lighting arrangement is odd (almost back to front). From left to right on the last picture above, it goes Fog Light, Dipped Beam, Full Beam, Indicator, Sidelights. That puts the sidelights in a really odd inset position. Is this legal lol?
* After fitting, you may well need to sort out the headlamp level adjustment. The difference in brightness is immense. However mine were too high, and i will need to adjust them.
