Silvias14.5.0

Hey guys, it's another 240sx with starting issues so heres a little background of what happened, I removed the dash to install my heat and air ducts. I found out i didnt have all of the components so i said screw it. Installed everything back in and no when the key is turned the car will not start, i have no accesories like the radio, windows sun roof, but the door chime and headlights/taillights work. Checked all relays and fuses everything is good, but im not getting power to the left side of my kick panel fuse box. Tried the ignition switch but no luck also my ecu was never remounted by the previous owner so in this process it may have had a few bumps. PLEASE HELP!!!!!! If anybody has any ideas please throw them my way im at a complet loss and im going to try the a new ECU next.