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All my trailers use the flat four pin. Vehicles all had the same. When I picked up the pontoon boat, was surprised by the 7 pin round connector on the trailer. Luckily, the never used female on my 2016 4Runner worked. So, I’m new to them.The only thought that comes to mind, something with the new trailer plug with your trucks receptacle. It’s not seating all the way or ground pin not making contact. Ie a physical issue, not a wiring one. When inserted in other receptacles, it is seating all the way. PS: Glad I didn’t run into that issue. The dealer was 2 hours away. I hope you were close to the dealer.
All my trailers use the flat four pin. Vehicles all had the same. When I picked up the pontoon boat, was surprised by the 7 pin round connector on the trailer. Luckily, the never used female on my 2016 4Runner worked. So, I’m new to them.
The only thought that comes to mind, something with the new trailer plug with your trucks receptacle. It’s not seating all the way or ground pin not making contact. Ie a physical issue, not a wiring one. When inserted in other receptacles, it is seating all the way.
PS: Glad I didn’t run into that issue. The dealer was 2 hours away. I hope you were close to the dealer.
