2003 Nissan Sentra GXE and you put a new CD player in it 5 min later your dashboard lights tail went out?

Here are a few things to check if your dashboard lights and taillights have gone out after installing a new CD player in your 2003 Nissan Sentra GXE:

- Check connections: Ensure that all the wiring connections for the new CD player are secure and properly connected. Double-check the wiring harness and make sure there are no loose wires.

- Check fuse: There might be a fuse that specifically controls the dashboard lights and taillights. Locate this fuse in your vehicle's fuse box and check if it has blown. If it has, replace the blown fuse with a fuse of the same amperage.

- Check dimmer switch: The dimmer switch controls the brightness of the dashboard lights. Make sure the dimmer switch is turned up high enough so that the lights are visible.

- Check light bulbs: It's possible that the dashboard lights and taillight bulbs have burned out coincidentally. Replace any burned-out bulbs with new ones.

- Check ground connection: Verify that the ground wire for the new CD player is properly connected to a good ground point in the vehicle. A bad ground connection can cause electrical issues.

If none of these steps resolve the problem, you might want to consult with a professional automotive electrician, as there might be an underlying electrical issue that needs to be addressed.