66 cuda electrical

I have a 66 cuda I brought home from my fathers last year. Although it only has 26K miles, it has not been driven in about 10 years. I have rebuilt the carb, distributor, new plug wires and plugs, new hoses and fuel pump. Getting ready to pull the tank and boil it out and run new fuel lines. I stuck a new battery in it and neg battery cable. I stuck the key in the ignition, and nothing. The headlights, interior lights, horn all work, as does the brake light indicator when I turn the key on, but nothing else. Can you pro's give me a starting point to check why I have nothing at the ign. switch? Thanks for your help.