Quote Originally Posted by scrat View Post
I would say you are having a power problem. Check to make sure the voltage you are getting is enough. The small wires that the boat companies supply are sometimes not big enough so try connecting a larger size wire straight to you battery with the correct size fuse and see if this is the problem before giving up. Or find someone with the same unit setup and swap out to see if it is your sonar or just your power problem.
I have a 859 up front could I try that?


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