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."
Scroll down to related links and look at "Conversion Voltage V to voltage level Lu and LV - Decibel (dB) level conversion to volt ".
inside alternator
The voltage regulator is an integral part of the alternator on that vehicle.
Inside the alternator
convert signal gains or losses to comparative decible reading.
When an element polarity of voltage or current source changes, the magnitude of the corresponding current or voltage changes is called unilateral element. Eg: Diode Even Diode connected back to back in parallel act as a Bilateral.
the voltage regulater is the most comon or you have a short wires crossed something
The three elements of electricity are: - Voltage - Current - Resistance
It is integrated into the alternator, if it is bad you will need to replace the alternator.
The Volatge Regulator Is Inside The Alternator.
An ohmmeter works by applying a voltage, and measuring the corresponding current. This is an application of Ohm's law: resitance = voltage / current.
The three basic elements of electricity are: Voltage Current Resistance