The picture of my connector and the horn cable adaptor do not look like they will connect. Square vs round. Does anyone know what the plug is called in case I need to buy one...I'm trying to keep everything stock and not splice if possible

I bought that horn kit from Curren RV. Finally got it installed and works great now. I had to call CRV about that connector, the two round parts in your picture are part of a cover over the square connector. In your picture to the right of your round parts is the finger that holds the two connector parts together. Pry that finger slightly away from the round piece and then you can take needle nose pliers and pull the round part out of the connector. The jumper in the other picture will then slip right into the that connector that you have the picture of. The most difficult part was getting the bolt that holds the horn bracket screwed into it's mounting plate. I ended up cutting a slot into the horn bracket and then slipping it under the bolt. No room for two hands under there. They must assemble the horn to the frame then the plastic body pieces, on those machines that come with a horn. Hope this helps someone.