Chosen Solution

how do you change the headlamps on a 2001 Vauxhall Vectra.

mark, if you want to remove the headlights, you will have to partially remove the front bumper. If you just want to change the bulbs, “put your hand behind the main light you’ll see/feel a rubber cover. Pull it off and there you have access to your light. It’s a little more trickier on the left side (near battery) as you may have to move some tube/cables to gain access.” Check this site for more information on this topic. Hope this helps, good luck.