Gary Lewis wrote
On that switch, I see it but don't know anything about it. And, there were auto-locking hubs, but they had problems with them...
I had the auto-locking hubs on a 1995 F150 4x4 that I owned briefly back in the later 90's, and I destroyed one of them...or both of them...I can't remember now. I had gotten the truck stuck while in 2wd, and then put it into 4x4 without having the ability to roll the truck ahead or back, and when I started spinning again I heard a bang from the front. I installed a set of Warn manual hubs after that.
1994 F150 4x2 Flareside. 5.0 w/MAF, 4R70W, stock.
1984 F150 4X2 Flareside. Mild 302 w/ 5spd. Sold.
1980 F150 4X4 Flareside. 300i6 w/ 5spd. Sold in 2021.
1980 F100 4X2 Flareside. 351w/2bbl w/NP435. Sold in 1995