Ok, head hung low, red faced and embarrassed and asking for help.....
I can build you a business jet, F4 Phantom, F16 Falcon, a UH1 Huey Helecopter and even a dirt Late Model stock car.....BUT I CAN'T PUT THIS FREAKING NUT ON THIS POWER CORD!!!!!!

Ok ok, woosaaaa, woosaaaa, I'm calm now, is there anything special to install this nut?? I tried Dawn, everything in my arsenal to put it on, no luck.....what trick am I missing........calling Gander RV??

Thanks