Voltage regulator smoking?

VanPhin said
Thank you very much I will take this info to heart

Also, if you don’t already have a service manual you can go to mymopar.com and get one, as well as the factory wiring diagrams.

Here’s the link for your ‘66 factory service manual

https://www.mymopar.com/downloads/servicemanuals/1966_Dart_Coronet_Service_Manual.zip