Burnt some Spaghetti!
1. Just wondering what might have caused this so I can check and hopefully fix it from happening again.
First you have to figure out the circuit.
Oh, and the Car is a 73 Duster 340 if that matters.
It matters greatly.
Knowing the model and options, we (that means you but we can help) can look up the wires and figure out the circuit.
Rear defroster, convertible, a/c are some options that will change the wiring.
If you have a decent internet connection, download the factory Plymouth (or Dodge) service manual from
www.mymopar.com
Go to the back of the electrical section.
Once we know the circuits, we can look for a cause the related to the type damage observed.
It may be a short from wire insulation chafing, a poor connector, or something overloading the circuit drawing more current than designed.