Sorry guys looks like I was over trouble shooting this the whole time. When I did the clutch I removed the lines from the top of the t case and swung them out of the way. Well I pulled the red line apart and had vaccum, pulled the black line, no vaccum. Turns out I pinched the hard line when swinging it out of the way but the retainer clip was covering it. Replaced the line and everything works as it should. I guess it had enough pressure to put the cad into 4wd and then no vaccum to disengage it just enough play to make the light go off. Thanks for the help.