72 Chrysler engine harness

The wiring diagram "in this case" is right from the manual, here: "If" it covers what we want:

http://www.mymopar.com/downloads/1972/72_Chry_Plymouth_Imp_Wiring_Full.pdf

Full manual

http://www.mymopar.com/downloads/servicemanuals/1972_Plymouth_Chassis_Service_Manual.zip