Can anyone identify these plugs?

[Ben]

I never plugged these in when I did the engine change. Can't remember whether or not they were plugged into the original engine... One of them has a red wire which I think is ignition live? If the plug isn't needed I'll use it for my stop solenoid wire.

[Tom]

Reverse sensor? Although i think thats a white 2 pin plug :/

Oil pressure sensor?

[Chris]

Grey 3 pin looks like rpm sensor. Should be on true left of the fuel filter housing.
Green 2 pin would go to a green sensor (if fitted) behind the fuel filter housing. Same type as the brown and blue ones in the front.

[Ben]

Cheers for the replies guys. Certainly makes sense it being the rpm sensor as I haven't had a working rev counter in a while!
Don't think I have the green one, maybe that was just on the old engine.

Looks like the reverse sensor is the best place to get an ignition live for the stop solenoid then.

[mattgreene]

isnt that the pulgs that go to the injector pump immobilizer 'computer' solonoid thingy, but yeh stop wire would be good