Replacing steering column need help

[hohosr]

So this is my 2nd bonneville and the 2nd time having to replace the turn signal. Last time I had the shop do it but I was a lot younger then. I researched a bunch of forums and got a very good idea on how to do it and I have the column out except for one pesky black hollow tube oddly connected to the column. Its a durable one too and not a wire so it cant just be cut and reconnected. The tube comes to a yellowish mount on the column and on the other side of the mount it has a metal point which resembles the top tip of a spark plug. The salvage column I got has it cut about a foot down and upon ripping on it a little bit it appears there is a spring and some other pieces inside it. Any have a good fix on how I can disconnect this tube and point from the mount safely? Does this have something to do with the airbag? What is the purpose of this?

Assistance greatly appreciated.

[hohosr]

Problem solved. On the main wire harness the sides are detachable. Use a flathead screwdriver and pull the separable clips off and reuse the main plug from the original column. I got it installed and bolted up and went to switch the steering wheel and air bag from my column with the new salvage column and proceeded without researching.

I got the nut off with some wrenching and now the wheel spins free as a bird as much as you want. It lost its connection with the steering shaft inside the column.
Anyone know what I messed up on this? The mosquito got too bad and put the project to a halt for the night.

Anyone?