I got told off by the misses, then carried on with testing and venting the fluro lamps.
The tubes filled up with water .
Couldn't find my hammer and used a 12V7Ah SLA instead.
Note of caution !!
MOT's and water are a dangerous cocktail. Don't try this at home with no proper safety measures in place.
I created this video with the YouTube Video Editor (http://www.youtube.com/editor