So I replaced the unit bearings on my 01 S Type and now the ABS light along with the E Brake light and the traction control light are on.
I'm pretty sure I have everything plugged in properly.
Is there a reset procedure?

 

Sounds like the sensor or its harness might have been damaged during the procedure.

do you have the workshop manual?
there are some pinpoint tests you can do to see if the circuits are ok.

if you manage to isolate the problem to the sensor, its worth taking a look at the harness since its happed right after working in the area

 

I agree that it does sound like a wheel sensor fault or the wires to it.Have a good look in the connector for any damage.
However, the wheels sensors are known to fail with normal use. I have had two fail in the last 5 years.
The jaguar SDD (for 05MY or newer cars) or IDS (for pre 05 facelift cars) software will tell you what sensor is faulty as it may not be the one you have worked on, but it probably is!!

Mellow