easybakeoven, you could look on
www.interford.co.uk
they also have a bb with parts for sale, or even e-bay, loads of stuff there!
also www.rapedogroup.com they do loads of stuff and its over in the USA
just a thought, (well you did say 24v) you might like to look here to
www.maddoldbugger.supanet.com

regards
tony