Hi, I have a Hummingbird GPS NS10 Going spare, it looks alright but I don't have the cables or bracket but I am sure they are still available.
Never tried it so I have no idea if it works or not but if you know the polarity of the plug socket I can test it and I would prefer to do this before I post it.
If you want it you can have it for a donation to our justgiving account
But as I say I would rather test it before going to the trouble of sending it at my cost.
Thanks Alex