raschemmel:
Bottom line is you don't need to remove those jumpers and connect the female pins because you don't care about speed. Leave them on and use the INn pins to turn the motor on and off.
Thanks, I understood most of that but struggled on bits.
I've removed the crowding, and I've got the H Bridge connected. To power the H-Bridge i've had to connect the 5V on the front of the H Bridge to a naked part of the 5v from the moisture sensor to the arduino. (not the best I'm guessing?)
I did this because there is only one 5v connector.
Here is a image :
http://i58.tinypic.com/33lih69.jpg
Thanks dave-in-nj and raschemmel !!