68 barracuda turn signal canceller

Do you need a whole switch or just the cancelling cam? "Turn signal canceller" in your title got me wondering.
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I may not have my terminology right:
If I go into it, I`ll replace everything inside the column. It is the only 49 yr old part in the elec. system, should have done it when I rewired the car ! I have found a replacement , complete w/ the wires all on it for way better than the asking price from every body else, made in America too. I`m going to change the flasher tomorrow to make sure that`s not it , before ordering the new part. Thanks for all the suggestions and replys !