Sorry,
I am assuming that I leave the tail pan ground from the sending unit during this test..correct? I may have this wrong..
I am conducting your test at the plug that goes thru the body into the trunk. At that plug (while plugged together) if you ground it the gauge goes empty immediatly. However, if I unplug that same plug and ground the hot side back to the gauge I get the same full pegged result...not the empty movement.
Both with the switch on
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