Coolant sensor wiring

I'm looking at my expansion bottle, and it doesn't have a sensor fitted at present.

However, there is a lead close by that looks like it could be the one.

The thing is, it's plug is shaped, and looking at the sensors on line, they don't appear to have a socket that shape (see pic).

The colour of the wire is blue/red and brown.

The brake fluid cap has a plug fitted, so it's not that.

Is this one for the expansion tank, or something else?

Thanks.

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Year and model would be nice to know.

Doh!

MK1 cabriolet GTi. Lhd 1984.

I've looked at the sticky on wiring colours/fuse board, can't see that it lists a blue/red wire on that part of the loom.

Ta.

Briano1234 said

Year and model would be nice to know.

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According to Haynes, blue/red and brown are the cable colours for the coolant level switch. It should terminate in a 2-pin plug with side by side female terminals.

I didn't think the 84 had a coolant level sensor

Thanks for all of your replies.

It is indeed the coolant level sensor. In the end, I ordered a sensor and tried it.

Although the plug is shaped, the sensor fitted to mine wasn't, so it just popped in.