This is a follow up to my earlier question about turn signal stalks. I have the new stalk with cruise control switches, now trying to figure out how to run the wire down the column. Column is from a '79 Caprice. It has what feels like a plastic piece on the left side that the turn and tilt go through, I am trying to figure out how the heck it comes off so I can thread my new wires. I'm hoping I don't have to pull the whole column apart. There must be a way to do this in order to service a defective cruise control switch.

thanks for any help

Pat