Are they now too low because you've lowered our car? If so you'll need to do the normal headlight beam adjustment and not rely on the levellers to compensate
Have you changed the front bulbs too?
Most MOT stations wil do your headlights for you for a small fee as it's not worth the guesswork to do it yourself
the old head light unit was thrown away as it was completely smashed.
just had a look there is a long white plastic thing sticking out to put a socket on wunder if thats it