Can someone help determine what are these two wire for?

The first one is the black wire I’ve highlighted with the red line/arrow in this picture.
It is under the dash on the left hand side of the steering wheel.

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The second one, is on the left steering stalk, brown and white. The one I’m holding.
I know it is not for the horn as I’ve used the other two brown from the right stalk and the horn is working properly.

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Thanks