The thermister is not the same design and has a different wiring harness. That's why I didn't just put the original one from the ZJ in the WJ tranny. I have decided that I will wire in another 1k resister in series to the one in already put in, that will make the resistance the computer sees almost right. As heat increases the resistance will be close. when I first wired in the 1k I was not think right so after JS97ZJ said what he said I pulled up the formula and laughed at my mistake. It may have been a blessing because when I pulled apart the over drive unit, I laid everything out in order but had to wait a few days for the output shaft to come in and during that time the wire ring, wave ring, and reaction ring got mixed up. (was apart at my work) so going back together the layout was wire ring, wave ring, and on top reaction ring. Totally wrong hahaha. So having it not engage is a good thing. At this point I know what I did wrong and will correct it this weekend. Will let you know when done.