use a very fine dental pick or large sewing needle to push on & release the small bent tabs that hold it the connector in the plastic housing
you'll need to bend those tabs back out when you reinstall them, otherwise when you push the plugs back together there is a good chance you won't get full penetration (heh heh) & lasting connections between the connectors, in some cases the connector(s) will just get pushed back enough so it looks fine but isn't making a connection- or will come loose down the road.
950 Adv 'S'
'87 KLR650 - <200K miles
"Like the Energizer Bunny, just keeps going & going..."