I changed my locks about 2 months ago, so it's still kind of fresh. I did mine at night, talk about hell on earth.
The tools I used included a long standard headed screwdriver, a pair of needle nose pliers, a small pair of vise grips Or (1) Zipties! Use the zipties to hold the needle nose pliers together when you're installing the "e-clip". This might work better since there's very little room to work with.
Follow these other guys advices of taking off the little button on the side of the door Use it to see in.
Use the screwdriver to take off the "c-clip" that holds the lock onto the door. After that's done you want to take off that little "e-clip" that holds the lock onto the linkage (be sure not to lose these), do that with the needle nose pliers. Those two steps are all you need to take the lock off. The lock comes out through the front.
To install the locks, put the little "e-clip" on first. You'll want to use the small visegrips to be able to grip the tiny clip, or refer to (1). Just get it on the little nub just enough, You'll want to give the little clip sort of a turning motion to get it back on. After you get through that hell just slide the big "c-clip back on to hold the lock in place.
You'll be golden.
FYI : It was hell doing this my first time, It took me about 1 1/2 for the first lock, and about 20 minutes for the second. Once you get the hang of it though, it becomes cake.
Which reminds me....I need to replace my hatch lock. I'm going to start searching.....
