Purchased a new Telluride S V6 AWD with 20" wheels three weeks ago. With the intent to tow a small travel trailer with the following specs: Base weight 3634# Maximum capacity 4500# It is a single axle Airstream Sport 22FB with a tongue weight of 422#. We plan to use a Hensley Cub Weight Distribution hitch which should transfer some tongue weight to the Telluride Frame. Checking with the Kia parts department, there are no Kia 7-wire harnesses made, only the four wire that comes with their hitch. A bit of false advertising to say the least. My question to those who might be knowledgeable in this area. Would it be possible to have an after-market hitch with 500# capacity and 7-wire harness installed? What would that do to the warranty?