Under dash help..

72 Demon.. Trying to get things reassembled with dash, under dash steering column, etc.. I can't locate my "before" pictures or any clear "exploded views"... I don't want to install everything then find out I routed the wires wrong or skipped a step and have to tear it all back down.
I may be over thinking it, but would love advice from those that know. To start, I'll include a pic.. Is there a bushing or anything that goes at the red circled area ( hole ).. Second, if someone could tell me how to set the column plate that attaches to the firewall correctly. There's a lot of play before tightened. Then there's the plastic ("wire"??) cover that attaches to the column and the the metal bracket. A step by step instruction would be great, and with pictures, even better. Even if someone could take pics under their dash, it would be helpful and appreciated.
Thanks..!!

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Here's what you need for the steering column support bracket.


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