Steering column parts
 

I have a 66 GMC 1/2ton that originally had the 3-speed column shift I purchased a month ago and am trying to get the canceling turn signals to work. I ordered the canceling cam through Jim Carter Truck parts and discovered it's not the correct one. The one I have is actually rivotted to a pop-metal hub that slides over the steering shaft. the only identify marks I could find was the word BOYNE. The truck was convert to 4-speed in the past, so the 3-speed mechanism are still in the column but not used. I'm looking for a replacement original, complete steering column or direction on where to find the turn-signal switch assembly

Re: Steering column parts
 

If the column is for 1966 GMC, it makes no difference if it is a three on the tree or not. Same turn signal parts. We don't know what column you actually have. If you want to replace the whole column, post in market place "wanted".....and/or try to post pics of the situation.