On Sat, 14 Feb 2015 08:09:47 -0500, "Tom" wrote:

Thanks Bruce

I will do more researching. I am just wondering if there is anyway to
measure the resistance or lack of between the two wires there for me. I
think the transducer there now is a good one, I would hate to replace it
with a less quality one and it will take a long time to fish that wire
because it has to get to the flybridge with extension. I hope to find a way
to test the existing one and use it. Thanks again Bruce, you helped me
before, thanks again and best regards.

You might also do a google search on "testing fish finder transducer"
(without the parentheses of course). A very quick look showed
http://www.brighthub.com/electronics...les/67551.aspx
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Cheers,

Bruce in Bangkok