I have never towed anything. I have a 2013 Sport with wire harness. Going to look at a boat this weekend with my wife. 19 foot weighs no more than 3,500 with trailer. About 2 hours away. Don't know for sure if I will make the purchase, but if I do I want to be ready. The seller said he thinks it is a 5 PIN. Does anyone see why I would not just be able to plug in and go?