Hi all, I have just purchased myself a newer Omega, got the 2.5 one, had the 2.0 before...
It is a 2.5 V6, 1996 "N" reg CDX, Auto, If that helps.

I have had a rumage under the bonnet abd can see these 2 plugs unclipped, but unclipped to what i dont know....


Under the expansion tank is this 2 pinned clip, anyone know where that might go??? The cable runs from there ander the air filter and down to the front somewhere.


This one is attached to a piece of plastic, that may have broken off, it seems to have a sharp edge on it, as if it was broken, This on has 3 pins.


Any help would be appreciated.

Oh Yeah, the Cruise control does not seem to work either, maybe its related, the guy i bought it from said it worked one day, but then not the next. 

It does come on when ignition on, then goes off when started, allthough it does not seem as quick as my 2.0.

ECU light comes on if I welly it a bit, but goes off again, when calmed down.

Any help??

Thanks..   

I will have a go to try and trace the wires on the 2nd one, so if the first one is coolent sensor where would that plug in, cant find an type of plug on the expansion tank???? If unplugged would it not be saying coolent low???? As it is'nt..

Thanks, So far.. Mark.

so where would that plug in???

If it was a 2.0, i could probably suss it out

Ok Then, I have taken a few more pics, maybe shed some light.....

Engine Bay....


The Plugs seem to be on there....


And on there.....


And another one showing the elusive plug....


Now i have a look under the expansion tank, a cant feel a plug hole, although, if you look in the last pic, where the brake fluid box is there is a wire coming down there to the expansion tank, this goes no further then the bottom of the tank, maybe plugged in there, cant really see, without removing it. So this leaves the bl@@dy one hanging near the cruise module, i thought it was for that, well hoping in fact, as it does not work, but there is a plug already in it, so maybe not???

Thanks all so far..   

Just looked under my bonnet,only plug resembling one that looks like yours (near to the expansion tank) goes to the auxiliary water pump,hth,anyone local to you  with a V6 so you can compare...Wayne

Looks like the plug that goes to the aux pump, that has already been suggested, but as you dont have the aux pump then it should be taped /cable tied up to the main loom out of the way.. That does not go to the coolant tank, wrong shape plug.