Help I'm an Idiot (110 oil pump senders)
A 110 oil pump has two sender units attached to it (at least mine does.) According to my workshop manual one is an oil temperature sender but I think that's probably just misdirection and they are both pressure senders. One for the warning light in the dash and one for the oil pressure gauge.
In any case, I stupidly omitted to remember which one goes in which hole. Needless to say the holes are the same. So which is correct the first picture or the second ? Or maybe it doesn't matter.