ABS light on after having front and rear brakes done

More than likely they left a wheel speed sensor unplugged or damaged the harness/sensor.

We need to start with scanning for codes. That will tell us which wheel it is so we are not guessing and will confirm the speeds sensor is the issue.

Just make sure the scan tool can read ABS codes because some cannot. If you do not have a code reader then most parts stores can do it or take it back to who did it.

Let us know what the code is and we can go from there. Thanks

https://youtu.be/rTtAnsOlZU4