I have a J L Audio amp XD400/4 and 2 speakers and a sub for the funk. HOW do I hook it up to my 2012 RT ?? It cam off a RS spyder but I did not get to see how it hooked up an no way to contact them. I have all the wires for the amp an speakers. I know where the audio plug is on my RT its on the right side under the seat. Any info will help. THX