The wagon began to start roughly. Now, not at all. No power to the lights or radio. No clicks...nothing happens. I thought it was a dead battery, but i checked it and it has a full charge. Is their a fuse or a relay that would cause this? Or?
How did you check the battery? If nothing has power, check your leads from the battery. Ground goes to the battery tray and then between the block and tranny. Positive goes to starter and the electrical junction under the dash, driver's side. From the starter, there's another positive that goes to the alternator.
There isn't a fusible link for everything that would blow.
Chances are, the ground strap that connects to the battery is broken, or it's just another connection in the area / terminals not making good contact.