Quick Fix - Buy a Posi Lok kit from quadratec. It replaces the vaccume disconect motor on the axle with a manually activated one. Only thing you gotta do is pull the button on the cable and your ready to go. This setup is almost as good as not having a vaccume disconnect in the first place. Some of the advantages of this kit are...
1: You can put your transfer case in 4L and not engage the front axle, thus you get true 2L (2wd Low).
2: You can shift on the fly or still
3: Goes in the vehicle in about 2 hrs with basic tools.
4: You never have to worry about your front axle unlocking when you dont want it to.
Also if you had the time, tools, and the money, you can get a manual hub conversion kit from quadratec and combine it with the posi lok kit to make your front axle even better. Only thing to this is its a bitch and will run you about $1,200. Thats why I'm gonna go with the posi lok kit first and save up for the manual hub kit.