Wednesday, January 27, 2010 - 01:34 pm, by: Brian Rignall(Cashmere)
For any who may have similar problems, I found the answer.
The sliding lid / cover has a small Z shaped piece of plastic screwed into it. This pushed against a 'button' on the left side (looking from rear of car to front) of the casing. This button effectively is a shut off switch. So if the button isn't pushed in, then nothing happens.
My Z piece was broken: so I made up a replacement from aluminium: everything now works properly.