hope this saves someone some time.
The white/yellow wire coming out of the DME goes to the oil level connector. This connector attaches to the oil level sender using a female pin bushing. The connector is composed of 3 pieces. All seem to be NLA now.
MB part number: 007-997-61-81 rubber boot (aka grommet) replaced by 008-997-07-81 also NLA is what you see on the outside. Inside that rubber boot you have
<p style="font-size:13px;font-family:'Helvetica Neue';">MB part number: 014-545-07-28 connector female pin bushing also NLA inside an snap together connector. This female pin bushing attaches to the male output pin on the expensive oil level sender the lives inside the oil pan housing. To get to the female pin bushing this part unsnaps.
<p style="font-size:13px;font-family:'Helvetica Neue';">to reveal the metal bushing and should have the white/yellow wire soldered to it.
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<p style="font-size:13px;font-family:'Helvetica Neue';">A third part, is a friction sleeve that helps to hold this assembly onto the oil level sender. Mine just crumbed away. This part is also NLA.
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<p style="font-size:13px;font-family:'Helvetica Neue';">In my situation the white/yellow DMA wire broke away from the female pin bushing. So I will need to resolder it onto the pin bushing. For the third part (friction sleeve), I guess I will need to find some kind of hose and cut it short in place of the NLA part.