if you don't have dedicated removal tools, a tiny eyeglass flat screwdriver will work. [those sets can be found almost anywhere if you don't have any, and they are cheap]
on the female terminal, shove the screwdriver into the slot above the top of the terminal, flattening the tiny tab that holds it in.
on the male terminal, you will take the screwdriver and shove it inwards along one side that will push the one leg inward, releasing it from the bulkhead.
it may take some fiddling around to make this work, but patience is king. if you are not sure what i'm refering to, look up "packard 56" terminals. that will show the tab on the female, and the leg on the male.
hope this helps.