suvend

Looking for some help after installing a new under-dash harness. Connected new harness and started the car and let it idle for a while to warm up before I drove it, after about 3-4 minutes of idling the car shut off like I had turned the key off. Now the starter just turns the engine over and the injectors do not pulse. Checked the injector fuse and it was fine, haven’t been able to check the injector relay yet. I have an MS2PNP. Just looking for a direction to start looking in.