Replaced stereo and now door locks do not work

For the radio not turning off, recheck the wire connections. Most probably the power source has been wrongly used, one is hot at all times and this is for the memory. If it is used for the main power supply, the radio would have to be turned off manually, turning ignition off do not turn radio off.

For the door locks not working, check the ground connections at center of dash. While installing radio, the ground circuit could have been loosened and not retightened securely. Check for blown fuses.