How do you repair the rear defrost on a Oldsmobile Alero 1999 if the fuse and relay are OK and there is no break in the elements but there is no voltage at the corresponding fuse?

I read on another site that there is a junction box behind the panel between the rear door and the rear window. The wires in this box should be soldered to reestablish a good connection. Haven't seen or tried it. Just something I read. Good luck

I also read the following:

"For those of you with problems with your rear defroster not working and all the fuses are good there is a piece of electronics that connects to the rear antenna and the rear defroster that melted in my car and caused the defroster not to work. If you sit in the back of your car on the passenger side behind the plastic by your head there is a black box that connects everything if its melted replace it and everything will be working again."