I am trying to complete the Hack the Mojave achievement. Where is a good place to look for terminals to be hacked? I've already hit all of the vaults.

Camp Searchlight

they are everyplace. but not everyplace has them, of course. when you are indoors, keep an eye out for them. there is one at goodsprings. and some military bases have them. you will get into trouble if you get caught.