Thanks - I'll have a look for Andy Tube!
I took the pedal apart also (should've mentined that) and it looked a bit grungy - however the wires seemed okay. I cleaned up the contact points and reattached everything. Also - the other thing I should've probably said was that there is power getting through the cord to the light.. So it seems the cord is okay...but maybe the pedal could be the issue.
Thanks again!
Kelly