O.K. I know I am risking verbal abuse here, but after trying to search for the last hour+... I went and looked at a 1994 80 today 126k miles and with the magical diff lock button. 8) It was almost surreal, seeing it in person for the first time, touching it. Besides just staring at one on a computer screen or through someone's window. So I took it out for a test drive and wanted to see if the diff locks would engage or not. Now I know there is many topics on why they won't lock and the such, but...I want to make sure I am doing everything correct. I stopped put the truck neutral, shifted to "L" pressed the diff lock button and watched the lights on the dash just blink...blink...blink... Now granted I was on concrete and not on the dirt. I tried turning the wheel back and forth a little, but that did nothing. The truck did seem to have a heavier feel to it. But, maybe that was just the "low." So am I doing everything correct??? I read somewhere else in here that I should put my foot on the brake also. And/or maybe they just haven't been used in a long time. This cruiser is a real possibility for me and just want to be sure. If they aren't locking would this be a simple (relatively speaking) fix? Thanks Added 3/14/2004... I am now the proud owner 8) Thanks to all for helping me figure this all out. Now lets talk about mods!!!