My 2003 ford explorer's tail lights stay on when I turn the truck off. How do I fix this problem?

I drive a 1996 Ford Taurus. My car won't shift into Park. The shifter bar will go into the park position, but the car acts as if it is in reverse. For me to park my car I have to put it into Neutral, put the E-break on. Turn car off, move the shifter bar into park position, and remove my key....

My friend had a 1999 Ford Taurus 3.0L V6 that she said was blown up because her sister drove it through a low water crossing and got water on the motor and it is making a loud knocking/popping sound. I was like you need to have it checked, doesn't seem right. So, a few months later she tells me...

The key is one of those that have chip in it, and the steering wheel isn't locked. It happened a few weeks ago but finally got it to work, this morning spent 15 minutes trying and wouldn't turn at all. Any ideas?

I backed out of my driveway and every gear was reverse then when I wanted to go forward to get back into my drive way it was still in reverse even though shifter was in drive. Shifter was hard to put back into park but got it there. I was able to push my car to where it is parked now even though...