Steering Column Wiring Issue

I've had the same problem on two cars I converted (72 Swinger and 75 Duster) to floor shift columns. One I transfered the old switch and the other I installed a new switch. I never did figure out why they wouldn't start with the key. I used a push button starter switch in the lighter hole like DUSTERDOWNS did. I'm looking forward to you guys figuring out the answer, I sure couldn't.
Bob