1970 Duster emergency flasher

while installing my steering column I noticed a empty plug with two pink wires and one red wire going to it and I looked on my wiring diagram and it appears that is it for the emergency flasher, I could not find one under the dash, so I got one with a bracket and plugged it into wiring. (My question is, where does it attach to dash or does it attach to column?) a picture would really help! looks like one screw holds it in place.

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