Alright so I have an EF with LS swap. My motor ran fine before, but my fan didn't trun on. So while I trouble shooted that, I did accidently touch pos and neg like 3 times. Anyways I fixed fan and when I when to turn car on I didn't get any spark. So I checked ecu and I'm not getting any respond. Its a obd0 PR$ and the led light is not even blinking once. I'm not getting any fuel. So my ecu is not grounding main relay. I swapped dizzy's and ecu's that are know to be in working condition and same problem. What went wrong?

 

There is a fuse under the hood for the ecu. This supplies the power to the ECU. Im 99% that fuse is blown and not giving you power to you ecu which it can't supply power to the main relay which cant turn on the fuel pump.

 

like i said the fuse is not blown

 

Check the fuse in the underdash #14 Alternator Solenoid valve...



I don't see anywhere that you said you check the ECU fuse under the hood you just said you get no response from the ECU, hence why I suggested to check the fuse.

 

and some times the pos wire in the same fuse box coming off of the pos battery cable. i had a small problem with that before