In order to haul your gooseneck trailer with a fleet of semi-tractors you will need to make your own adapter harness which will then make for a plug and play connection but they don't make anything pre-assembled for this out of the box to my knowledge. In order to make the adapter you will need the Pollak Heavy-Duty, 7-Pole, Round Pin, Trailer Wiring Connector part # PK11700, the Roadmaster Brite-Lite Wiring Converter part # RM-732, and the Pollak Black Plastic, 7-Pole, RV Blade-Style Trailer... view full answer...
Yes, since your trailer has electric brakes a P2 part # 90885 or a P3 part # 90195 will work great with your setup. The fact that your tow vehicle has air brakes would not matter as the controllers use the brake light circuit for activation. view full answer...