I have a 2001 X230 Ducato based motorhome and the intermittent wipers have stopped working, everything else works fine. I’ve checked inside motor and all is good, does anybody know if there’s a relay that works the intermittent wiper mode.

Reckon there's a fair chance that a relay is involved.

Well I have finally got intermittent wipers working now. I removed the steering column cowl to clean contacts but couldn’t get to them. Unwrapped the wiring and wiggled all wires and connections and hay presto wipers now work on intermittent.
I did find the relayin the end on the bulkhead in engine bay but not needed to touch that.