When I bought the car It had rectangular spots similar to MK2 . They looked naff. During the resto I discovered that the wireing to the spots looked original.I could not find the switch until I discovered that the rear fog switch has two positions. One for front fogs and one for rear. I'm no expert but Ive never see that on a MK1 So i deceided to fit round ones. I think the orginal ones were dealer fit options.
The ones ive fitted are only cheapies, but yeah I think they look great
The link option on the forum is not working for me at the moment, If you copy and paste this link you can see what the car whith the rectangular spots on
viewtopic.php?f=15&t=21687