What is happening

I have a head stumper guys and need help. I have an 05 TRD Off Road (manual) and it started some Jenky shit on me today.
When driving in any gear, it tells me I'm in reverse. Also, if I leave it in reverse and turn the truck all the way off, the fan stays on and the passenger airbag light stays on. All the while it does this, it will not engage in 4 wheel drive.
I'm thinking electronic somewhere but I have no idea what all four of these have in common. I'm lost, please help

 

Wow your in a real pickle there, lol I have only one idea, when it says your in rev and your not,, are the rev lites on?
If they are I would check the rev switch on the trans, if it's bad it might be shorting something causing your gremlins.

 

Good place to start.
Like he said. Good pickle or bad.

 

Thanks mucho. I'll check that out tomorrow.

 

You have a manual trans? What do you mean by, "when driving in any gear it tells me I'm in reverse?"

 

I mean I can be driving down the interstate in 6th and it'll still thinks in reverse. Reverse lights on and everything