72 duster steering column wiring

I have the factory manual for a 71, am looking but new to mopar. I am seeing a speed control that is a vacuum activated control, turned on and off by rotating the turn signal lever. So far no colors are matching up, but honestly I'm not that familiar with this manual and it doesn't call out Duster as a model. I'll let you know what I find, nice of you to help the nephew.