Back on the road .... The cables you tighten to pull the slack out but if the rear shoes are worn thin the e brake won't have much effect on the adjusting side ...because the shoes are what is expanded when you pull the handle ..via a spring lever action .and did you bleed the load sensing valve at the back it likes to hold air when the system has been open

 

Where is the load sensing valve located at ill try and figure out why my hand brake light
won't go off

 

It's that skinny rod attached to the axle follow the rod up to the valve attached to the frame should have a bleeder valve on there .usaully the hand brake light or brake light in general either it's low on fluid and the sensor attached to the master cylinder cover isn't submerged enough in fluid

 

That's sound like rear wheel bearing! It's going away because your taking the load off of it!