https://toyota.7zap.com/en/us/camry/283460/sxv20l-cemdka/3/6703/670050/#69377 is a diagram of the door, The part I'm trying to install is number 69377 "Snap, Door Lock Control Link"

 

You put the plastic linkage retainer into the door handle first, then put the linkage in, turn the retainer to lock the linkage in place.

Not sure where you got the numbers from, nothing matches to the diagram you supplied.

 

You put the plastic linkage retainer into the door handle first, then put the linkage in, turn the retainer to lock the linkage in place.

That portion of the mechanism is not the problem. It is the other end of the connecting rod that somehow attaches to the door latch. Apparently it is somehow held in place by the small plastic clip. That lower portion is where I can not figure out how to install the snap clip.

 

Take the latch out, put the retainer and the linkage on the latch. It is easier to connect the other end that the latch end. Not very difficult to remove the latch assembly; disconnect the linages and connectors, three screws on the outside and out it comes.

 

note that rod from the outside handle is not actually "attached" to the latch lever, it sits in a slot in the lever and when the outside handle is stroked the "L" shape in the rod pushes down the lever

the reason why the rod is not more securely fixed to the latch lever is because when you stroke the inside handle that lever moves up /down (don't want the outside handle moving when you pull the inside handle)

that resin piece is just for noise/rattle