993 C2 warning light

[Attwooj]

All -

Please could someone help me?

I'm looking at a 993 '95 manual C2 to buy and during inspection noticed that one particular warning light wasn't illuminating on the dashboard upon pre-ignition. Obviously not being illuminated it was very difficult to see which one it is but it is the furthermost left light from the cluster of lights below the oil pressure gauge.

I've searched online and I think (think!) this must be the brake pressure warning light (i.e. circle, 2 arrows facing inwards) but then I've also seen on a post elsewhere that this light might not exist on a 2WD 993 (which I don't quite buy but still...).

So first question is, what is this light?

Second question is, should it come on pre-ignition?

Help much appreciated!

[Attwooj]

PP - thanks! Andy C2 people able to confirm this?
My last 993 was a C4 and I certainly remember this light coming on then. Never had a C2...