Here's what to do...
Check your grounds. There is a main sensor ground coming off of the main harness. Make sure that gets grounded or you're never gonna start. It's most likely that...
If the car doesn't turn over...
Run a wire direct from the starter solenoid to the positive battery terminal. Assuming everything is hooked up correcty, the car should crank. From there, check for spark, fuel, etc. It could just be your ignition wiring is a bit messed up or not hooked up correctly. If it cranks, fires, has fuel, but doesn't start, then it's what I mentioned above about the sensor ground.
Good luck...