well, upon further review, i've discovered that the bw 1339 quadra trac was only produced up until '79 so you don't have the same t-case i am somewhat familiar with. i assumed it was the 1339 because of the vacuum switch and the fact that jeep put them in a lot of waggy's in the 70's. i would bet you have something very similar though (all wheel drive). if i find out what it is, i'll let you know. just start messing around with it and post up what you find. i'm sure we can figure it out with a little more info.