Recently replaced my Cruise Control stalk and can say for sure that wire goes to the cruise control/turn signal stalk. Make sure you put it in the column before you install the column, otherwise, good luck installing it with the column installed. I tried for hours to get that wire bundle back down through the steering column for the new cruise control stalk with no success. While the steering wheel was off, was able to fish out the original cruise control bundle, mine was severed, and spliced in the new wire bundle that came with the new cruise control stalk. There are four color coded wires in the wire bundles. Attach them color to color and secure the bundle down in the sterring wheel hub. Mine had not worked for 20 years, as soon as I did this, it started working on the first try just like brand new! Good Luck!