Don't have female connector on bench at moment, but it's very similar to the male one for dismantling. In both cases you have to remove the internal cover, which just pulls out.
The locking part for the spade is the small plastic tab shown in the the picture below (sorry about quality). The trick is to lever it gently down using very small screwdriver, and then pull the connector. The male part is removed from the rear of the housing, but I suspect the female spade socket is removed from the front.
Closest connector I have found is this one, but the spacing may not be correct. Waterproofing isn't really an issue, because the connections are inside the EAS box.
http://www.ebay.co.uk/itm/4-Way-Bla...ls-/131599415414?_trksid=p2141725.m3641.l6368

The locking part for the spade is the small plastic tab shown in the the picture below (sorry about quality). The trick is to lever it gently down using very small screwdriver, and then pull the connector. The male part is removed from the rear of the housing, but I suspect the female spade socket is removed from the front.

Closest connector I have found is this one, but the spacing may not be correct. Waterproofing isn't really an issue, because the connections are inside the EAS box.
http://www.ebay.co.uk/itm/4-Way-Bla...ls-/131599415414?_trksid=p2141725.m3641.l6368