i just installed the PL5300 on a 2013 Tacoma Access cab. these instructions were a big help but i would add a few things in case my experience was vehicle or year specific.
-small needle nose pliers made life a lot easier with all of the tabs and "squeezing."
-grab a very small phillips screwdriver for the tiny screws on the camera holder
-the tab to remove the camera from the harness had to be pried outward lightly not squeezed. pliers came in handy here.
-and using the pliers to squeeze the red and black tabs was very simple.
-my PL5300 didn't come greased up so i'll have to add some on the major contact points.