Sorry, Okla, but even though those free diagrams are sometimes far FAR better than nothing, some of them DO have errors, and are not complete for different options and other features.
There is only ONE correct answer to the problem
YOU NEED to get yourself a reprint, either paper or CD of a FACTORY shop manual in the CORRECT year.
You can download a complete 72 manual right here, but there will be SOME differences in each year. If you are "good" at electrical the 72 manual, along with the Mymopar diagrams for 73 might get you through
Here:
http://www.forabodiesonly.com/mopar/showthread.php?t=132309&highlight=manual,+download
There are several manuals posted, and some of the broken links at the start of the thread have been fixed further down Some of the other manuals do NOT have electrical and are not complet, IE are only "body" manuals, etc
The 72 manual:
[ame]http://www.abodyjoe.com/pictures/Misc.%20car%20info/1972%20Plymouth%20Chassis%20Serv%20Man.pdf[/ame]
Also "MyMopar" has some simplified diagrams of the alternator/ regulator and electronic ignition which are very helpful:
Index page:
http://www.mymopar.com/index.php?pid=31
(By the way, browse around the "Master Tech Service Conference Library" link. These are various service videos and bulletins FROM Mopar)
Diagram of the 70/ later alternator/ regulator:
http://www.mymopar.com/downloads/Dual_Field_Alternator_Wiring.jpg
Diagram of both 5 pin (older) and 4 pin (newer) Mopar ignition:
http://www.mymopar.com/downloads/Ignition_System_5pin.jpg
http://www.mymopar.com/downloads/Ignition_System_4pin.jpg
"just the links" for the MyMopar diagrams:
http://www.mymopar.com/downloads/1973/73DartA.jpg
http://www.mymopar.com/downloads/1973/73DartB.jpg