Gloomis

Hello all, I did a 2000 tundra 2wd to 4wd conversion getting parts from a donor 2000 rusty 4x4 truck. In my hast, I did not disconnect the vacuum line to the 4wd front axle when I removed it because I thought it was just a vent..now I can't get the 4x4 lights to stop blinking or 4x4 to engage. I need to hook the vacuum line up to the axle, but I cannot find where the vacuum line source was hooked up originally. So any help would be appreciated. I can't find it on line or in the manual.