Ignition trouble shooting

I've just finished a 440/slant 6 conversion in my 75 Granny Duster. Installed an A-833 rather than auto. Original steering column. Used the original harness cuz apparently you can. All hooked up and ready to crank but no go. Starter is good. Power to the relay. I think I have the neutral s switch in the right spot unless there is something in the column that I don't know about. Where do I start to track down the problem. Greetings from Winnipeg.