I will not pretend to know anything... I am sure it is wired for Dometic. As I read here the Dometic vs Coleman? have 3 VS 4 wires...someone can easily help with that. According to Dometic's website(i think is where I read) after July 6? 2016 are supposed to be "fixed". If you are adding a 13,500 unit I don't think they had trouble with those. I have a new unit on order and I chose 13.5K on both units because of the proposed troubles. Hoping for the best... I am sure 15-18K would have cooled it well, but I a thinking ice cream inside after struggling with 100 deg. days.
Our new 5er 10-26-16
Days camped 2016 8