I'm trying to change the door locks in my '69 roadrunner. I took the tiny c clip off the back of the new lock, the part inside the door, and removed that piece to get the rod back into the hole. Now I cannot get the tiny c clip back on. I can see the clip only goes on one way. I lost one clip down in the door already and I'm using my last one. Is there a simple way to do this? Should I remove the whole rod from the locking mechanism in the door also? I have a '69 Plymouth manual but it is not helpful.

put the flat tab w the hole back on the rear of the lock & secure it w the E clip. Then put the complete lock part way in the hole and tilt it till you can get the rod in the hole then put some sealer judiciously/sparingly around the perimeter of the lock around the dimed sized perimeter gasket then set the lock in all the way in the door & lock it in w the metal clip on the back side

It's a PIT back side. Did you remove the door panels? Rool the windows up? you have to slide the rod in... then push up on the clip. Not sure what else to say.

O.K. Thanks for the advice everyone. It's going to be a few days until I try again. I'll post how it works out.

It took me a while but I figured it out. I took out the 3 screws holding the locking mechanism onto the jamb side of the door so it was free inside the door. Then I was able to move everything around and the rod slid easily into the lock. It took about a whole 10 seconds once the mechanism was loose.