headlights?

[vlj]

That is indeed a manual adjuster mate

I'd imagine they'd be alright to leave manual or you should be able to swap the adjuster itself for the electric ones from your original lights

Don't think the 306 ever had auto levelling though I may be wrong?

Nope, never had auto adjusters - but the adjusters did become electric. There's also two different types - the adjuster you get on the frosted lights is different to that of the crystals, it's a little brown/black box that you'll want to swap over. Takes a bit of persuasion.