Motorcycle Repair: 1978 sportster, crank case vent, oil pressure switch

Question
QUESTION: Mike on a 1978 sportster oil pump the feed line goes to the upper fitting and return to the lower fitting by the oil pressure switch and crank case vent line behind sprocket cover.is this correct?

ANSWER: Looking at teh oil pump the lower one, by the pressure switch, is the feed and the upper one is the return. The other one you are talking about is the vent
Happy new year
Mike

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QUESTION: Mike on a custom chrome,hores shoe oil tank there are 3 ports and a drain 2 ports come out on the right lower side .by the starter .do you know witch is for the return and witch is the vent. I get oil out of the 3rd port first its under the tank right side bottom this should be the feed line? you are very helpful.this has been a 5 year build I am so ready to ride. thanks, dwayne

Answer
Since you have a custom tank you would have to look inside to see where the tubes go. Generally, the lowest is the feed. The next two shuld be about the same heigth. the upper one is the vent and the the next highest would be the vent.
Happy new year
Mike