Front drains for the W123:-



It eventually comes out in the wheel arch just behind the front wheel on this bit:-





Sunroof drains from the front come out from behind the front wing / fender a little further back - if you remove that plastic panel shown above you can see a bit of rubber tube right at the top of the inside of the wing.

Sunroof drains from the back come out just behind the rear doors on a sedan on the pillar - just behind a thick bit of trim.

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1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!