I was working on a ls swap that has a no spark condition and i check pretty much everything and it looks good one thing i notice is each time i turn on the ignition it sparks i know thats not normal so what might be going on is one of the wires not wired right am i going have to redo the hole harness

 

UPDATE harness didnt have the guides on the pcm connectors and they were on backwards, when the ignition was switched on it fire off some of the plugs and blew the engine since it wasnt in rotation. Note be careful with these things, was fixing this car for a customer