International Power Divider

I have an International that when you flip the switch for the power divider to engage it actually turns it off. I was putting brake shoes on a customer's truck and noticed the wheel would not spin. So I flipped the power divider switch and wheel would free spin.
With yellow knob in and divider switch ON the power divider is off.

Seems like there was some rears in Internationals that worked differently but I can't remember from so many years ago. Where when you put air to it it disengaged the power divider. Am I remembering this right? I am thinking someone replaced the rear to the opposite version.

 

Just 2. I was putting brakes on the left rear and the wheel would not spin. This was a non park brake wheel. I flipped the power divider off with yellow knob in and the wheel would free spin.

 

I was putting brakes on the left rear and the wheel would not spin. This was a non park brake wheel. I flipped the power divider off with yellow knob in and the wheel would free spin.

 

Thanks. It has been a good while since I came across this issue. This truck is like a 1999 if I remember correctly.