The connector I’m on about is on the wiper motor itself, very accessible, if they ever play up again, leave them switched on and fiddle with the plug, if they jump into life you’ll know it’s that plug.
It’s best if you pull over and stop to perform this test but perhaps this is why some cars have treads on the running boards and the bonnets open sideways, maybe the passenger is supposed to shimmy along the outside and fiddle around while on the move.
