I don't know what just happened! I have an 04 2500 and I just went to start my truck, right headlight came on as soon as I turned on the key? never happened before. I don't have any other lights, (I have interior) I did a quick clear to see if anything would change Nope! I have a code (ad 00) never seen that one before? I was told it might be water in the plug?
Has anyone had that before??
I need some help please??

 

I was just told it's water in the plug, but I blew it out and I'm sure the damage is done so I'll have to have it cleared before anything will work??

 

Well after clearing the 0069 and 0595 codes, the 0595 came back and I still have no lites, flashers, wipers, and horn? Is there a control box, fuse, or relay that controls all of that?
This all happened when I plug my trailer in. When someone else plugged it in everything worked just fine for them?

 

If it happened when you plugged in the trailer lights, I’d check the wiring on the truck side for a short, as I’m assuming you mean the trailer lights work for your friend.