Instrument panel bulb replacement

[chossy]

Hi I am having great difficulty trying to remove my bulbs from the instrument panel.
I can not for the life of me seem to pull out the flasher & full beam lamps.
Is there any special technique to getting them out.
Here is an image of them I got 2 out easy but these won't budge and i don't wan to rip the wires out.
I did remove the outer casing but the cover looks like it's not removable so can't do from the front.

And is this a suitable replacement.

Head light pilot 12v.17w
https://www.ebay.co.uk/itm/131814398868?hash=item1eb0c01b94:g:COQAAOSwCH1h8ezf

Speedo/Fuel 12v 1.7w
https://www.ebay.co.uk/itm/141993157846?hash=item210f73a4d6:g:jCUAAOSw7W5XN4pV

If anyone knows the sizes for the like 501 for speedo/286 for head light pilot ect could you please post them for me.