Marine Electronics Questions? Ask a Technician for Answers ASAP
Hi, thank you for contacting JustAnswer.com. My name is Russell. I will do my best to provide the right answer to your question.
Is it possible that you have an irregular fuel flow rate in reality? such as, owing to pinching (intermittently or varyingly) of the fuel line somewhere, or clogging of the fuel filter ?
That's my though on this matter - unless, of course, you have either loose connection, corroded connection / wire-ends, or an unreliable ground on the fuel gauge or on the Garmin, or an unreliable GFS10 flow sensor - how new is the GFS10 ?
If the meter read half tank but the 1020XS recognized the fuel gauge, then that's closer to the right hookup. (Is reading half tank, the middle position on the gauge?)
Varying rapidly by a large amount signifies a loose connection of some sort, normally.
In a three-prong power outlet, the three prongs are
The Neutral is *not* equal to Ground.
What is the 'neutral' that your wiring is using, please? since it is on shipboard, it is not the same as three-prong house current/outlets I presume!
I suspect you should wire the meter back to the way it was when it went to half-way with no power.
A connection can be 'loose' esp. on shipboard, even when mechanically tight, if there is corrosion or dirt inside the connection, blocking it. So I advise disconnecting every connection, using a clean dry brush on the metal of each side, then wiping down each side's metal with a clean dry rag cloth, then re-connecting. That will make sure corrosion is eliminated.