Yes it can be done without removing the bumper... but gosh is it a tight fit to unscrew the reflector. The screw is not easily accessible and it's difficult.
The set of reflectors I bought for my car ended up not fitting. UGH! I liked this particular led style better as I felt it fit the car better. The backs of the reflectors are completely different and will not sit properly when installed, and that's not ok to me.......... so to not have all my work go to waste, I grabbed the reflectors I bought for my wife's Tucson but hadn't installed yet and saved my install.
This is the style I wanted

This is the style I ended up installing...

Tap the brake light wires...


Wrap everything up...

Hope everything fits.... oops.

Supposed to be like this...

The backs are different and don't snap into place in the bumper...
