Today I replaced my heater core and AC evaporator. After putting everything back together the Jeep will not turn over (crank). The lights come on, the radio works and the fan blows but when I turn the key it will not crank. I have checked and all of the switches that I disconnected have been reattached. I am wondering if the ignition pin was damaged while the steering wheel was disconnected and laying down. Any additional thoughts from you guys?