your white wire goes to one of the bolts inside to the adapter for a ground. the yellow should have a spring and a plastic tube with a small ear on it that goes into a hole through the adaptor and into the column. the plastic tub pushes in and turns to hold that flat rivet on the end to the horn clockspring look up dorman 49319. I cant get the picture to attach. they probably slid off the wire while unhooked from horn button
I though yellow was always for the airbag...🤔