Pull the dash connector again and see if there is any voltage on the red wire wire to ground on the battery. If there is that means the power is coming from somewhere other than the dash. If there is no power to ground that means the power is coming from pin 30 on the dash and there is an issue with the dash. There should not be any power there when the key is off. I am still assuming the ground for that circuit is at the dash so this will compensate for that.
I will have to look at a Nevada dash output I am assuming they are the same but I don't know at this time.
I will have to look at a Nevada dash output I am assuming they are the same but I don't know at this time.