starting problems (nothing happening)

You used an extention cord to charge a car? Was there at least a battery charger at the end of said cord?

So you know the battery is charged now and the connections are corrosion free and tightened down, correct? Do you get any power to the electrical equipment like the interior or head lights, instrument panel, etc, or is there no power anywhere?

If you follow the positive cable from your battery, the fusible link should be located somewhere near the firewall. Never had one go on me, but that is what they are there for.

If the Cad has the 5MT starter, they have common problems eating the armature (spinning thingy in starter, commutator, etc) from corrosion. Which gives a no start like this.

I found the problem this afternoon. it was the starter. it was dead! I replaced the starter and now i am cool. thanks for all your help.