Just a guess here. As I have never owned a 79.
But your symptoms are exactly like an accesory wire being disconnected.
The accesory wire (if your model has one)comes off of the positive terminal of the battery. It is the smaller diameter wire there. If not connected you will have no lights, radio, solenoid or starter engagement when you turn the key, even if your battery is fully charged.
Thursday, December 6th, 2007 AT 7:41 PM