Car Stereo problem

I took the stereo out of my trade-in vehicle and put it into my 2003 Honda Civic EX. I did not have to cut any factory wiring. I had a wiring harness for my CD Player and then also the wiring harness that fits right into the Civic. I wired those two harnesses together and when I turned on the ignition on and got no power to the cd player. I figured I would just put the factory stereo back in. I put the 2 harnesses back on the air/heat controls, one harness back on the hazard lights, one harness back on the back defroster switch, and then one harness and the antenna back on the cd player. When I turned the ignition on, the cd player should display “CODE” but never did. Since then, here is what is wrong:

--The cd player won’t turn on
--Keyless entry will not work
--Unless I have the ignition to the “ON” position, the power locks will not work
--Unless I have the ignition to the “ON” position, the dome light will not come on when a door is ajar.

Here is what I troubleshooting I did:

--Double checked I plugged everything in correctly to the back of the cd player and air/heat accessories
--I checked the fuse for the radio and also the fuse under the hood for automatic locks and both looked and tested good.
--I unhooked the negative battery cable for a 12 hour period in case some kind of anti-theft device was locking it out.

Any help or ideas would be great!