I picked up a tilt/telescopic wheel out of a 66 impala or caprice cant remember which. Problem is I cant figure out how to lock the telescoping part. Cant find a lever and the guy I got it from thinks it locks some how from the center horn assy. I cant figure it out??????

on Grandad's Caprice, there was a tab at the top that you turned like 1/4 turn counter-clockwise to loosen, pulling the colum in or out, and re-tighten. right behind the horn button, hope I am explaining this right. It is like a "tab" that turns