72 Duster Resurrection

You can also go to www.mymopar.com

They have the entire factory issue 1971 plymouth body service manual available for free download
And the entire factory issue 1972 plymouth chassis service manual available for free download.

The wiring differences between 71 and 72 are very minimal. If you have room on your computer for these FSMs i recommend downloading them, then you can print out copies of whatever you need to look at. The info is worth its weight in gold.