A while ago my rear driver's window would intermittently not roll down. Then it quit all together. Today my passenger rear quit. Does anyone have any insight to where I should look? Would it be in the rear doors or in the driver's door?

 

It doesnt work with either switches? By that i mean the front switch and the one in the rear doors?

 

Nope. When I try with the front, I'd hear a very slight tick in the back door.

 

You would probably have to check to see if the motor is getting any power. Could be a wire is burned up

 

Probably just needs new motors or regulators, but to answer your question, I would look in the rear doors themselves at all the window mechanisms

 

yup. test the motors.
regulators are probably needing of a swap

 

Best thing to do is get the wiring diagram for the car, sometimes the other doors get the power from the drivers door. Now that i think about ut on the coupe that might be the problem why the passenger door is so slow when rolling both up at the same time

 

it does, driver is the main power source for others.