Something is askew with my indicator lights

[SCRAPINRANGER]

I think all the issues with my indicator lights are coincidental. First off my door ajar light is on but both doors are closed completely. Which would make me think the actually door ajar sensor is busted. How much of a pita are they to install? My airbag indicator light came on waiting to pull out in traffic after leaving work. I have no friggin clue what this problem could be but I'm sure someone here can tell me what might cause this issue. The last problem is my turn signals dont always work. Left never has a problem but right does sometimes. It does not matter if the headlights or hazzards are on the turns just pick and choose when to work. If I push the right t/s on all the way it makes a weird very weird noise kinda like an electric screeching noise ( Its hard to explain the noise but thats what it seems like). If I manually operate the right turn by pushing the turn up just enough to engage the t/s then release then push up again it works fine. As soon as I try to let the t/s do its own by locking it in place it makes that noise. I would tend to think its the multifunction switch would I be correct in this assumption? Thank you in advance for this help
The truck is a 98 ranger xlt 3.0 auto 140,000

 

[TheJackal]

The door ajar light is one of the two door's switches. They're located inside the door and you'll need to remove the door panel.

Does the airbag light flash? You'll need to get a code on that to determine the problem.

The turn signal issue is the multifunction switch. You'll need to replace it, or, if you're feeling lucky, you can try to fix it.

 

[SCRAPINRANGER]

Thank you very much for the help you are the man