E30 Zone

Can anybody tell me how to get access to the headlamp washer supply tubing. The tube on the passenger side has come off and it drains my washer bottle. I have clamped the tubing up for the time being but I want to get it sorted.

Take the wiper arms off of the headlamps, and remove the plastic grill.
I doubt if the pipe has come off! The usual problem is that the white back check valve has failed. Common problem, and about £3 odd from the dealer.

Thanks.