Changeing spot light bulb

Ok I have a mk1 gti cab 1983 it's got a spot light build gone . How do i change it…??    I have looked at the back of unit and there is a bolt with nut on it tried undoing that and that does nothing . It looks like a sealed unit..??

Def not the standard 'Hella' spots/fogs. Looks like a spurious one made to fit? Love the taped up wires and no grommets going through the metal cover.  

Remove the nut and see what's inside.

Thanks for that . I have undone nut and it's a holding bracket that holds the light in place like a cup and ball both outer  and inner are plastic .. I have seen the red tape and there is more that needs to be sorted…. I have only had the car since the weekend

That's a 'Carello' grille, quite rare and a genuine 80's accessory… might even pre-date the Hella double light grille?

The bolt / washer affair at the back looks crude but it's original… loosening it allows you to move the inner, sealed unit around to set the aim, like an eye in a socket.

As you've found out taking it off altogether lets you change the bulb.

Might be a crock, but I recall reading that the lamps sit further forward creating more space between the grille and the radiator making it a popular choice for cars with aircon.

Nice thing.
 

Ok thanks for the info....

Pictures are better than words, currently on 'The Samba'…

https://www.thesamba.com/vw/classifieds/detail.php?id=1853006
 

Well, everyday's a school day

Thanks it seems you no a bit about mk1's..bacadincoke