@ RD i bet when they installed the 7 pin on your pops truck it was the same time they installed the 7 pin for his trailer, so they just matched them up. I was able to use the little wire diagram on my & pin connector on the truck to match the boat trailer.

KurtL the only way i know to fix your rain issue is move to where the rain doesnt like to be, AZ or NV but then again i understand if they dont fix the water issue there wont be drinking water in the next 10 years in those 2 states.