How do you remove/replace Vectra '05 side repeaters/indicators?

I need to remove/change ALL the lights on my 2005 pre-facelift Vectra!

I have bought a HID Xenon headlight conversion for the projector type dipped (main) beam, and LED replacement bulbs all round - (even for the interior light)! (Got a bit carried away lol).

Who knows their Vectra dismantaling techniques like the back of their hand?

I need to remove the headlights (after taking bumper off I know), to do the conversion properly; so I can do side lights & front indicators at same time.

Rear lights dead easy through boot, but side repeaters must have to come off from behind I guess? Any advice or instruction on ANY of these tasks would be a great help, before I break something lol.

Cheers, Jem :)