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Can someone provide service manual pictures of wiring schematics. Thanks.
https://www.mymopar.com/charging.htm MOPAR CHARGING SYSTEM PRE-1970 Diagram #1 shows the basics of the early alternator / voltage regulator design. There are 2 brushes in the alternator, each one has a field terminal, one is labeled "FLD", the other is labeled "GND". The GND brush is grounded with the brush mounting screw. The other brush is the (+) brush (or field) and attached to it is a green wire that routes over to the voltage regulator (which is behind or near the brake master cylinder). This green wire is connected at the voltage regulator at the "FLD" connection (with a screw). The other connection on the voltage regulator is a blue wire with a female plug end. This is the "IGN" Ignition side. Basically, the Voltage Regulator completes the charging circuit and allows the alternator to charge the system. When a certain voltage is obtained, the regulator "opens" (or turns off) the circuit until the electrical system's voltage drops, then it completes the circuit again. The old voltage regulators are repairable and rebuild able. The 1969 Dodge Shop manual (available from a number of vendors) details how to do this. If you think your regulator is failing, open it up and clean the "points" with some emory paper (sometimes these points get corroded). NOTE: in diagram #1, the FLD is generally green, and the IGN wire is Dark blue on stock wiring harnesses.
I have a diagram for a 66 Coronet. Should be the same I would think
Go to mymopar and download a complete service manual. Look at Tools and reference then find your car. Having a SM is invaluable.
Here is the 67 service manual for your Plymouth.. It does cover more than one plymouth model. http://www.mymopar.com/downloads/servicemanuals/1967_Plymouth_Service_Manual.zip http://www.mymopar.com/downloads/servicemanuals/1967_Plymouth_Service_Manual_Supplement.zip And here are the electrical schematics.
It would benefit you to at least take a look at madelectrical.com and read his rewire of 67 dodge electrical systems. Unless your going for concourse restore, his design changed everything electrical in my 67 coronet for the better.