Ok.. that clears up several things.. the yellow wire is just a reference wire for the starter to start and everyone ties into it for any alarm.
Using the diagram from Jeff, you have located the ASD or auto shut down relay, correct?
Using this diagram as reference.. locate the fuse 21. Check for power on the pins at the relay supplied by this fuse. If you have power, then we need to check something else.. If you don't trace this back to the fuse and make sure it is ok. If fuse has no power into it, let me know..
Also, has anyone checked this car for any faults for you? ie check engine light on? ..
Do something for me as well.. cycle the key on (engine off), off, on, off, on.. leaving it in the run position last.. the check engine light should pulse out or flash and depending on model, where the mileage shows up in the dash, some numbers may show up. write all of these down and report back to me... on the flashing of the light, count flashes and write down all numbers.. the light will pulse and pause between numbers. If you loose count, you can start the car (or attempt) and then repeat the on, off cycle again..(key on 3 times)
Let me know what you find