Problem I have is my interior lights will not come on, by door ajar message/light will not come on, and the stereo does not turn off after ANY door is opened. Now this pickup is an 05 king ranch frame and interior, however, the body is an 04 XLT. I did find a connector unplugged in the drivers door and it looks like the harness in the door is new.

 

Is this a new to you truck?
Did these problems just start?

I would guess that a 2004xlt does not have the same options as a 2005 king ranch does, when the two trucks were married were the instrument cluster and the VSM programmed by the dealer