Under Dash Wiring Help

This might have what you are looking for

https://www.faxonautoliterature.com...t-Electrical-and-Body-Assembly-Manual-Reprint

I have same for 67 and it has a lot of misc usefully info.

Basically keep wires away from the wiper linkage, and any other moving parts.

Also be aware of rub, like where wires could rub on a braket. It doesn't take much time rub through and cause a short.