The park brake control unit

Can I unplug the harness from both units to check or how can I check for power with the multimeter while they are both connected?

I only see one box on top of the differential, where is the other one?

There is power between both of these twi sets of pins, using a test light. Removed the actuator, no loose wires or broken pieces. I connected the motor while in there to a battery source, didn't move, removed the motor board connectors and removed it from the case and it moves, removed the wheels on I side and all look good none are broken. Weird this is, once I install the motor into its case and install the shaft that pulls one of the brake cables it doesn't turn with battery supply, and hard to turn with hand, even though everything looks good and nothing is broken. Is it possible that motor is weak?

When I unscrewed the passenger side cable I tried to push it back towards the wheel but the cable was not going back in its hollow tube. I suspected something, took off the wheel and disc and the cable was broken. Wasn't even connected.

After putting everything together with a new cable for the passenger side and a new motor inside the control box, I tried to pull the e-brake and still the same message, but this time there is not even any noise as if it is trying like it did before it used to make at least a noise. When I removed the control box I let the car down and was driving it until I get the passenger side cable. And I was getting a code for EMF or something like that which is because the e-brake connector was not connected to anything, so I drove it for 10 days, not sure if some dirt got in the connectors and caused a fuse to blow or what, but connecting the harness does nothing, usually it will immediately give me a noise on the dash and the yellow light, but connecting it now won't do anything. Still have the yellow light though.I tested the motor outside and everything was working fine. The 129 fuse in the back is okay.

It makes a clicking noise if I clear the code but then comes back and does nothing. Then I cleared it two more times. Now no noise at all and has this code.

I did all of that while right wheel was still up, so I suspected the wheel not to move and it didn't by hand. So I put the wheel back and put the car down when put in gear barely moves, definitely stuck. Even though I pulled on the emergency cable which has not yet been attached to the trunk.

This thing was so stuck, so I removed the mounting bracket again and tried to remove the cables but they were so tight because the brake was on and won't release, but then I pulled hard on the emergency cable release in the trunk and it released it. Went in and tried the parking brake button after I reset the code and you can hear winding of the gear and then when it stops the yellow light comes back again and the codes sets again.