My 91 4dr civic is not operating thre rear windows.
I have determined that the motors operate with 12v applied, both up and down.
I have acquired a new switch to know that is not the problem.
I have swapped out the drivers switch, same problem.

Here's a weird part...
By powering them down with the battery, I can roll them up with the door switch.
But only the individual door switch, not the driver door.

Any ideas?
Perhaps the relay?

Please help, I'm ready to remove the motors...