engine bay by the battery down to the tranny fill hole. Make sure the hose stays in the tranny fill hole (secure with what ever you think works). Then I dump 3 quarts in the tranny and plug up. No compressor needed just gravity. I drain old fluid out with car on level ground and jack up and secure to do the fill.
Note of caution, before draining old fluid FIRST remove the fill plug. If that can't be removed at least you will not be without a car to use till you get the fill plug out.