On a W123 there is a relay hidden right up under the dash (driver's side).

So yes look for a relay.

They usually have part numbers on them - bang the numbers you find into google / ebay / fastlane / other places(!) to see what description comes up.

__________________
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!