Warning lights on and nothing happens when turning the ignition key

If all that happened, was you changed the battery, then we need to start with checking the cables and then clearly the codes.

Here is a guide that will help with this:

https://www.2carpros.com/articles/everything-goes-dead-when-engine-is-cranked

Once we confirm the battery is tight then we need to move onto the starter. This means we need to check the voltage at the starter and find out what is there. If you have 12 volts on both wires when cranking the engine, then the starter is the issue.

https://www.2carpros.com/articles/how-to-check-wiring

Please see the wiring diagram below and let us know what you find with this, and we can go from there.

Thanks