you either have a blowed fuse or a wire crossed
What your seeing is the cars radio antenna. Your defroster is on your back window.
in the rear window at the top above the defroster
When you turn on your back window defroster, it activates a heating element that can create electrical interference. This interference may disrupt the radio signal, causing static or loss of reception. Additionally, the defroster draws significant power from the vehicle's electrical system, which can affect radio performance if the system is not designed to handle the load.
The radio antenna is part of the rear defroster in the rear window. I believe the radio antenna is in the slanted far-rear window on the passenger-side.
it may be your alternator or your battery. Whenever those "unneccesary" gadgets go out first it usually signals low power going into your car. When your vehicle notices it has low power going in, it tries to kill as many extras your car is using as possible. Hope this helps!
The answer is integrated into the rear window. If you look closely you'll notice some "tracings" that look a bit like the defroster tracings in the windows. For the 2006 Altima it should be in the "top" portion of the rear window.
A loose wire can cause a radio to stop working in a 2008 Jeep Wrangler. A blown fuse is another cause and can be fixed by replacing it.
The rear defroster (demister) on a Subaru Legacy is built into the window. The lines going across the back window are actually the defrosters. If the vehicle is equipped with a rear wiper, the switch for this should be located below the radio and heater controls.
Some of the standard features on a Chevy Equinox are: an emergency communication system, power door mirrors, speed control, AM/FM radio, CD player, automatic head lights, rear window defroster and a rear window wiper.
Crossed wires that have corroded together can cause your heater and radio to stop working, at the same time. The heater and radio are not related in any other way.
There is a radio/defroster interface module behind the passenger-side c-pillar. Pop the plastic off and eliminate the plug, which has melted and broken the connection. By splitting the module's case, you can solder some suitably sized wire directly to the plug tabs. Then use butt splicers to connect the leads to the car's wiring.
Check fuse first (see owners manual for location). Second, check lines on window interior to see if there is a break which might have been caused by a scratch. If there is, you can purchase kit at auto parts store to repair scratched metal lines on window. If none of these appear to be the problem, consider replacing switch (behind the dash, near radio. The switch is a big job because you have to remove the dash cover first.