09-23-2013, 08:10 AM
I have a 35' Open, I am having the same problem with the tach's that you have explained. Yesterday we made a 100 mile run on the Great Lakes and they would work intimately, but most of the time not, and nearly never steady, "always both at the same time" I have suspected that it is a ground, but with my lack of knowledge in this area I don't know where to look for the grounding point.
John
John


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