Changed radio instramentpanel gages lights went dead

No, but you may be able to get a trouble code by scanning the computer for history or pending codes.

The fact that all your electrics disappeared including all dashboard lights indicates a faulty battery/connection.

Check the battery terminals for cleanliness and tightness. Check the black earth lead for cleanliness and tightness where it connects to the engine block/bodywork. Try adding an extra black battery lead - connect it to a suitable point on the engine or bodywork

I just answered your other question about this same issue. You need to stop replacing parts long enough to DIAGNOSE the problem so you are not creating further problems by changing all the parts on the car.

battery flat ,alternator not charging

Sounds like a electrical short. Have you checked the fuses?

the connectors on the back of the gage panel are loose or coroded. should get a no bus signal in the dash panel.

l
Make sure you are in PARK. Vehciles won't turn over when they're in gear.
Otherwise it may be a starter problem

look at the fuse and the wireing if still cant solve hit me back

Like you said, battery may be flat. You can check that with a multimeter.

Next check the alternator. Faulty alternator leads to uncharged battery.

not really charge battery n try again