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Old 08-09-2019
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Randy Dupree Randy Dupree is offline
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Join Date: Dec 2007
Location: Port St Joe,Fl
Posts: 36,890

A 2 second search found this on the web.
The oil sending unit for the dash gauge will be located close to the oil filter. It will have from 1 to 3 wires depending on type. It will have a fitting on the bottom that screws into a port near the oil filter. It will normally be round with a slight rounded top, although the shape could be different on yours.

There is an oil sending unit on the engine also but that only transmits information to the ECM and not the dash gauge. That may be what you purchased from Cummins and you should not attempt to change it. It will look nothing like what I described above.
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Randy Dupree
2000 LXI 43
Port St Joe Fl.
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