An interesting link was posted on Fly Past forum today, which links on to Norwegian crash sites. A couple of images which go to illustrate the bomb racks in He111's.
This one has a shot of the bomb racks from the mostly intact example which was pulled from Lake Jonsvatnet in September this year...
http://home.no.net/kjellsor/jonsvatnet.html
And this one shows the racks still in situ in the wreck of a Heinkel in Sweden...
http://home.no.net/kjellsor/sitas.html
Hope that helps.
BM