Since you're taking it in, no worries. But when troubleshooting you only do ONE thing at a time..... when these cars don't run in the run position, it usually is ballast resistor, like 9.9 times out of ten.
Changed the ballast resister still the same. If it was the resistor shouldn't affect the oil light which won't come on untill I try to start it and goes out once it starts if I hold the key on a bit it will run but shuts of when I let the key go.