2005 Prius passenger rear window does not work

OK, this has me stumped. My passenger rear window decided not to go up or down last week. It would not work from the master switch at the driver front or the switch at passenger rear. So, I thought the window regulator motor was bad and I ordered a new complete assembly with motor. When I got it, I installed it, but it did not work after making all the proper connections.

So, I watched a few more YouTube videos and thought it might be the passenger rear window switch. So, I looked online and found a company called SwitchDoctor and I called them. The rep said to connect two wires to the motor terminals in the socket and than to a 12 volt power source [I used a 12 volt charger]. And then see what happens. The motor worked! I also connected it to the original regulator assembly and the motor worked on that one also! So, it was NOT a bad window regulator assembly! The rep suggested that I purchase a window switch. So, I did.

When it arrived, I installed the switch but the regulator motor STILL did not work! I even connected it to the regulator assembly motor that I removed but it did not work on that motor either!

I looked at all the wiring to see if there were any issues but everything looks good. I even removed the window switch assembly from the driver rear armrest and connected the wiring to the new switch I purchased and also to the original switch. Both switches worked, so I deducted that it is NOT a switch problem.

Could it be a bad master switch, since there may be something wrong there, and it messes up the circuit? Possibly some wiring problems that I cannot see?
Any suggestions? Thank you for your time!

 

Thank you Guy..............Here is what I did. I called SwitchDoctor and spoke with a different rep. She said that the other rep I spoke with should have told me to purchase the Master Switch, since the current goes thru the Master FIRST, and then to the rear switch. Since it did not work at the Master Switch, she said that is the bad switch. So, I ordered the Master and they sent me a prepaid return label along with the Master. I installed the Master and guess what?...............my passenger rear window went up and down!!! So, I returned the rear switch they originally sent me and all is well; and I now have a new Master Switch and a new passenger rear door window regulator assembly with motor. I could have sent it back but I figured for less than $50 for the regulator/motor assembly, I might as well leave it in. I now have a spare one, which is the original. All in all, I paid a lot less than if I had to take it to a repair shop or even worse the "stealer!" Hope this thread helps someone in the future.