No power to the starter

the starter relay has to see a ground whether it be through the seat belt interlock or through the neutral safety switch and/or both . because your interlock has been disabled, the power/ground is going around it to the NSS. if the trans connection is loose or grimed up, or the switch is bad , you will lose you ground / power through it. find the connector in the engine harness at the firewall that leads to the switch at the trans. unplug it at the firewall and temporarily jump it with a piece of wire and see if it turns over at the key. show us a pic of your relay and the interlock bypass.

can you turn the key in the run position and start the car by jumping it at the relay?


you will get more thoughts and suggestions but i would start here. i had the same problem and in 10 minutes i had it fixed by grounding the starter relay