I have a Sirius radio that uses a docking station that I use on all my vehicles and motorcycle...I have docking stations on all my vehicles BUT I only have 1 radio that I use...On my 2018 Ridgeline it has a 3.5mm port that I can plug the Auxiliary cable in from my docking station into the RL audio system...I cannot find a matching 3.5mm port on my Passport EXL??? It has several small rectangle shaped ports that the book says can be used for inputs...DOES ANYONE KNOW IF THERE IS A CABLE THAT GOES FROM THE 3mm ROUND TO THESE RECTANGLE PORTS??? OR ANY OTHER WAY TO USE MY STAND ALONE RADIO OR iPOD??? THANK YOU