would it start or would I have to wire things up ..... I have am ls swap that ran and it won't start in my car now any help please

 

The EX harness will do you just fine, you will just have the VTEC plug dangling. Are you sure everything is connected and bolted?

This means, The thermostat ground, Transmission ground and Valve cover ground? I got your PM. Make sure you didn't blow a fuse if you didn't un-hook the battery while doing your swap. Does it crank and just not throw spark? You have the distributor installed correctly, right?


If you could, be more specific on what all you have done. I will try to help you out as much as I can.

 

your ls motor: obd0/1/2?
not enough information in your post.

 

You need to use a 96-98 harness. I'm assuming you are using a 99-00 si wiring harness, that is your problem. The two harnesses are different at the computer.