Need to know where the locatuion for the speaker fuse is it and what nukber do i need toi check to makre sure the fuse is not blown

Here are some steps you can try to troubleshoot the issue:

Check the power source: Ensure that the receiver is properly plugged into a working power outlet and that the outlet is not controlled by a switch or a circuit breaker.

Reset the receiver: Unplug the receiver from the power source and wait for at least 30 seconds before plugging it back in. This will reset the protection circuit and may resolve the issue.

Check the speaker connections: Ensure that all speaker wires are properly connected to the receiver and speakers.

Check for blown fuses: If none of the above steps work, there may be a blown fuse inside the receiver. You can check this by opening up the receiver and looking for any fuses that may have blown.

If none of these steps work, it may be best to take your receiver to a professional repair shop or contact JVC customer support for further assistance.

In the under hood fuse / relay box > should be marked on inside the fuse box lid .

You could try to turn off the rear head phone.I had the same problem in my wife 2010 Nissan Armada.

Either your speakers are blown, you have a loose connection somewhere, or your amp is bad. First thing to check is the amp. If all looks good then you probably need new speakers. Be sure to check all fuses, and, the super simple stuff- like verify the bass setting on the head unit isn't turned all the way down to 0

are you sure you have power on both sides of the fuse ie: used a test light to check it?

There is no fuse to the speakers your rear speaker wires should run under the kick plateon drivers side broken or disconnected wire or burned out channel in radio.

Will one fan come on when you turn the A/C on? This tells you the fan and wiring is OK, and the problem is in the temperature switch or the cooling fan fuse or relay. If the fan will not come on with the A/C, it could be that both fuses are bad, or the fan control module is bad. Makre sure you check all of the fuses #4 & #7 (probably inside the car) as well as 47, 50, and 56 (probably in the engine compartment fuse box). If you have more questions, please let me know.

You need to check the fuse first if that is good you will need to check to see if you are getting power to the motor. if no you will need to replace the mutifuction switch. if yes meaning you have power at the motor you will need to replace the motor . ps: makr sure the wipers arms are tight on the bolt also.

Befor you do anything disconnect the battery while car is off. The first thing you should inspect is the radio fuse. Then check to make sure all wires are connected correctly to the radio. Also check to see if it is grounding out anywhere, any lose speaker wire that is exposed to contact with metal will result in either a blown fuse or distortion in the sound system. Correct any faulty connections or blown fuse'. Double check just to make sure. Then reconnect the battery and test out your radio.

did u know that they make a harness for your car that plugs into your factory harness and then adapts to your aftermarket radio? for the lights, you have blown the interior light fuse, it may be the same fuse as the cigar lighter.Below is your radio wire colors and what they do.
1990 Toyota Corolla Car Stereo Radio Wiring Diagram.
Radio Constant 12V+ Wire: Blue/Yellow
Radio Switched 12V+ Wire: Gray
Radio Ground Wire: Brown
Radio Illumination Wire: Green
Radio Dimmer Wire: N/A
Radio Antenna Trigger Wire: N/A
Radio Amp Trigger Wire: N/A
Front Speakers Size: 4′
Front Speakers Location: Dash
Left Front Speaker Wire (+): Pink
Left Front Speaker Wire (-): Purple
Right Front Speaker Wire (+): Purple
Right Front Speaker Wire (-): Light Green
Rear Speakers Size: 4′
Rear Speakers Location: Rear Deck
Left Rear Speaker Wire (+): Black
Left Rear Speaker Wire (-): Yellow
Right Rear Speaker Wire (+): Red
Right Rear Speaker Wire (-): White
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