Ok, also I got these 2 separate 'boxes' with my 10 purchase of the gauge cluster.
( i know I need an account with a photo sharing site - but those are blocked by work )...
The top 'box' says 'power and digital lighting' - same as my original..
The second box says 'display mode ' - wind speed and depth' and 'depth alarm'.
Since the gauges light up when I plug in the serial plug and flip the nav breaker.. i am good there.
Now how/where do these hook up to the transducers ( that are under than cabinets in cabin ) ?
From what i can see now - my original box is wired to electrical panel and then the serial cable from it to the gauges, but where do the transducer wires come into play ? am I missing a 'piece' ?