I recently purchased a BNIB set of the round foglights and they came with instructions so I figured I'd share.
Instructions are in English, Franšaise and Deutsch.
These are the only set of instructions I know I have right now. Asking me won't make me have another set of instructions.
The brackets for the square version aren't the same as the round ones, but they should be easy enough to figure out. I do not know if eBay or other replica lights will match up. I do know Esuse squares are very close to the OE squares in design.
INSTALLATION INSTRUCTIONS : FOG LIGHTS
INSTRUCTIONS POUR L'INSTALLATION : PROJECTEURS ANTIBROUILLARD
MONTAGEANLEITUNG : NEBALLAMPEN
26 - Bulb Replacement / Remplacement de l'ampoule / Ersetzen der Birne