'68 F100 door lock Question

Have you tried having the outside door button depressed when you press the lock button? I'm not familiar with the 68 F100 but I've known of other cars where that was the "trick" to lock it without the key.

I had a '63 F100 Custom Cab, Short Bed with unibody construction, and I think I could lock the door while it was open, then close it and it would remain locked. The door handle operated in one direction to open the door, and the other to lock it. I recall that a pull of the handle opened the door, and a push activated the lock. I may be wrong on locking the door while open, but I have no recollection of having to only lock the door with the key.

I also had a '65 Mustang, and I know for certain that I could lock the doors without the key.

Having said that, I find that locking the door with the key is useful because it prevents locking the door while the key is laying on the seat.

mpossable to lock your self out you need a key to lock or open the doors..go= od luck..bill c..1971 f100 427 4spd 9inch ford with a spool..love my ford pi= ckup,,,lol

Thanks guys for all the suggestions/tricks, but I've tried them already. I can only lock the doors form the outside with a key. On my '65 Galaxie convertible, I can push down lock knob, hold in outside button then close and lock door. I'm still wondering if someone else out there in Ford truck land may have an answer to my original question, what year did Ford incorporate ( on trucks) the feature of locking door from outside by pushing down inside lock knob, holding in outside button and then close and lock door. Then based upon that year, could I fit that mechanism to my '68 F100? thanks to all, JRnNC

My memory may be messed up but I think my dad's 1965 F-250 did that, and I believe my 1969 Mustang did also.