A:AnswerYes - you need a adapter from a lighting connector to a 3.5mm jack or a new patch cable the has a Lightning connector on one end for your iPhone and a 3.5 mm Jack on the other end for your boat aux
A:AnswerOf course it would depend on the model Studebaker you have. I'm not sure if they all have the headphone jack. As long as the headphone jack is there to accommodate both ends you should be fine.