What kind of gauge do you ahev and how many fill-levels can it display? The number of probes is related to the number of unique levels your gauge can display. Four usually relates to E, 1/4, 1/2, 3/4, F (empty + 4 additional states). 6 probes would probably give more detail between Empty and Full.
I would order more probes.
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Gary Brinck
Former owner of 2004 American Tradition and several other RVs
Home is West Palm Beach, FL
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