today I stripped centre console out to try and fix heater issue, here is a picture of what I can see

I believe its the blue one for checking Cel Codes, but what is the white one for
on side note found issue with heater - the cable is not clamped on the back of the heater panel so it was moving the sleeve instead of cable, stripped it out and have clmped it down best I can, but looks like others have been in here and made a bit of a mess, bits of broken plastic here & there.
------------------------------------------------------------------------------------------------------------------------------------------
Central locking has not worked since I got the car, I replaced the inner door handle today and noticed a big green box (is this central locking control) and part of the loom was unplugged from it, after I plugged it in and tried the door I can here it make a click but it dosent unlock or lock the other door.
also worth saying the keylock on the drivers door is stiff not smooth like the other door, and lock/unlock flap is same and also sometimes when try to open door drom inside have to pull handle a couple of time really hard before it will open
help pls