Engine bay white connecter, won't come apart

[hopgop1]

Need some advice, trying to get the engine bay fuse box white connector apart to clean the contacts (pictured) but I absolutely cannot get it to come apart with the limited room in there. Has anyone got any tips?

 

[DomP182]

In my experience they can be quite a loose fit at times, I can only assume its either got dirt/dust between the two or the pins themselves are corroded together?

 

[hopgop1]

Fought with it a bit more, WD40 on the sides to soak and a bit of prising with a flathead screwdriver to un-fuse the plastic and I'm in. Doesn't look particularly corroded, but there was a bit of grime in and around it. I'll give the pins a sand and a liberal amount of electrical contact cleaner.