Did you check all the cables from the battery. The ground cable goes straight to the engine block and sometimes gets loose/corroded. Did you clean the battery terminals and cable connections before installing the battery? When you say "no dashlights" do you mean absolutely no lights? Does anything else electrical work?
Another place to check. Against the firewall is bunch of wires connected to a single point on a bunch of spade lugs. I had one of these from the battery harness break once and had to reconnect it by putting a new round lug on and securing the lug under the nut.
Happened to me. Turned out to be my ground cable from the battery was bad inside. The ends looked perfect but was cracked or something I guess. I didn't take it apart to find out. But a new ground cured my problems. Till the next one.
I did the celanoid also. I am stumped. I will keep replacing things
You replaced it or did you try and by pass it to verify it has power to it?
Its a quick easy test to see if its an ignition switch issue or another problem such as a loose or bad ground as mentioned before