Mike did a great long post about Panzer III tow cables here:
http://www.armortek.co.uk/Forum3b/viewt ... f=4&t=2627
but unfortunately, since his untimely demise, his website is no longer active, so the images are missing.
I have copies of the pictures, so if you can let me know which Ausf you are interested in, I should be able to work out which picture shows that layout.
Adrian.