My 4x4 won't engage.

I been redoing vaccum lines since they were in not so great shape... then I came across a problem.

There is one hose that I can't find where it goes.. It come off the vaccum switch or watever it is on the tranfer case and goes nowhere. I found it laying on the exhaust manifold right after the y pipe.

It looks like it should plug into the tranny somewhere. it comes from the front of the vaccum switch (it there's 4 hoses connected to it, its the one closest to the front) on the transfer case, and over the tranny to the passenger side. Even though the hose is a lil melted, I can see its flaired out where it attached...


Anyone kno where it goes to? I been hunting and can't find it. I felt the side of the tranny for a half hour from different angles trying to find where it goes...

Help