Which model dryer is it? I have a few wiring diagrams and may be able to help.

I have the Canadian-built version of the D6 - the motor from this model has 3 posts numbered as follows: 0 for neutral, 2 for the hot lead coming from the relay and safety thermostat and 4 to the music box chime.  

Brian, I dug out my US D6 dryer manual and I am not sure the 2-post motor will work...  Per the schematic, there is a green wire that connects the starting relay pull switch to a start winding in the motor; I think you could leave this disconnected and connect the blue and white wires to the motor posts.   What would probably happen would be that the dryer would start as soon as the timer was set; it should still stop if the door was opened.

I'd suggest tracing the circuit from the black and white connections on the terminal block with a voltage tester.  If my theory is good, the there should be power flowing to the blue and white motor leads when the timer is 'on' and the door is closed.