While looking into material for my upcoming page on Apollo 14's Hycon images I came across this information in the ALSJ's Apollo 13 image library regarding this image:
On the left, an astronauts holds in his right hand the feed water bag from the Portable Life Support System (PLSS). It is connected to a hose (in center) from the Lunar Topographic (Hycon) camera. In the background is the 'mail box', a jerry-rigged arrangement which the Apollo 13 astronauts built to use the Command Module lithium hydroxide canisters to purge carbon dioxide from the Lunar Module.
I've been through the transcript and a few other sources and they all indicate that the hoses concerned are from the suits - there's no mention of cannibalising the Hycon that I can see.
The Hycon camera itself has similar looking cables, but in this photograph they are all black:
https://imgur.com/DAvOdZ8Anyone any idea where the ALSJ got their information?