Will this plug straight into my door harness?

Yes. This switch uses the factory connector, so it connects directly to the existing wiring without adapters or splicing.

Do I need to remove the door panel to install this?

You'll need to access the switch pocket in the door armrest or panel. Most installs require removing trim around the switch area — a trim removal tool and basic socket set are all you need.

What if the windows don't work after I install it?

Test the switch before final installation. If windows still don't operate, the issue may be in the door latch mechanism or wiring downstream — check your service manual for circuit diagnostics.