The unit is complete except the main cable from the display to the dome was cut about 6 inches from the dome. It was working fine when I took it off my old boat three years ago and has been sitting in a cabinet in my shop since then. As far as I know if you get a new cable it should work fine--but no guarantee.
I looked for cables on ebay and craigslist but didn't look very hard. You might want to look around and see if you can get a new cable. I have the old cable and the connector but it looks like it'd be a pain to try and splice it--maybe a marine electrician could do it.
It's just wasting space so if you want it I'll sell you the whole thing for $50 plus whatever the actual costs are to ship it to you.
Let me know.