mini eyeglass screwdriver for the female ones & a small screwdriver to press the open leg of the male one in the pic slightly toward the other leg. When installed it's hard to tell which one is the open leg so press both & the one that moves is the open leg. When you have em depressed the right amount the terminal/wire will EASILY pull out the back side & if it wont you need more work especially on the female ones. Want that locking tab flat. dont force anything which will just end up damaging the bulkhead