05-31-2023, 11:52 AM
You need to get a voltmeter (even a cheap one on amazon). With that, measure the voltage at the back of the gauge as well as at the batteries. My guess is they do not match.
You can then use the meter to systematically determine where the voltage drop is coming from. With the boat being 20 plus years old there are likely several high resistance contributors but experience tells me that one will be causing the lion's share of the voltage drop.
You can then use the meter to systematically determine where the voltage drop is coming from. With the boat being 20 plus years old there are likely several high resistance contributors but experience tells me that one will be causing the lion's share of the voltage drop.
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