The rear speakers on my 1990 Pathfinder stopped working. I suspected that it is the fuse. I read that they are located somewhere in the engine compartment by the wiper on the passenger side, or in the passenger side panel in the cargo bay. Which is correct? I know that the fuse is not in the fuse box under the steering wheel.

Look in the fuse box in the engine compartment.

there is usually a label on the cover or on a attached label somewhere around the fuse panel if not directly on fuse panel.

Check this for...
-
2005 Nissan Pathfinder with Bose Audio Wiring Diagram
Car Radio Battery Constant 12v+ Wire: Yellow
Car Radio Accessory Switched 12v+ Wire: Green/Black
Car Radio Ground Wire: Chassis
Car Radio Illumination Wire: Red
Car Stereo Dimmer Wire: Gray
Car Stereo Antenna Trigger Wire: Green
Car Stereo Amp Trigger Wire: Green
Car Stereo Amplifier Location: Under the Driver Seat
Car Audio Front Speakers Size: N/A
Car Audio Front Speakers Location: N/A
Left Front Speaker Positive Wire (+): White
Left Front Speaker Negative Wire (-): Black
Right Front Speaker Positive Wire (+): Yellow
Right Front Speaker Negative Wire (-): Brown
Car Audio Rear Speakers Size: N/A
Car Audio Rear Speakers Location: N/A
Left Rear Speaker Positive Wire (+): Brown
Left Rear Speaker Negative Wire (-): Black/Red
Right Rear Speaker Positive Wire (+): Blue
Right Rear Speaker Negative Wire (-): Black/White

-
2005 Nissan Pathfinder Car Radio Wiring Diagram
Car Radio Battery Constant 12v+ Wire: Yellow
Car Radio Accessory Switched 12v+ Wire: Green/Black
Car Radio Ground Wire: Chassis
Car Radio Illumination Wire: Red
Car Stereo Dimmer Wire: Gray
Car Stereo Antenna Trigger Wire: Green
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: N/A
Car Audio Front Speakers Size: N/A
Car Audio Front Speakers Location: N/A
Left Front Speaker Positive Wire (+): Brown
Left Front Speaker Negative Wire (-): Blue
Right Front Speaker Positive Wire (+): Light Green
Right Front Speaker Negative Wire (-): Red
Car Audio Rear Speakers Size: N/A
Car Audio Rear Speakers Location: N/A
Left Rear Speaker Positive Wire (+): Green
Left Rear Speaker Negative Wire (-): Black
Right Rear Speaker Positive Wire (+): Gray
Right Rear Speaker Negative Wire (-): Orange

Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

HI,

The flasher relay is in the fuse box. Read the cover of the fuse box, were you could be guided by the position of the relay.


Hope that helps you out!

colors listed below. please let me know if you have more questions.

1995 Nissan Pathfinder Car Stereo Radio Wiring Diagram
Car Radio Constant 12V+ (HOT) Wire: Pink
Car Radio Switched 12V+ Wire: Blue
Car Radio Ground Wire: Gray
Car Radio Illumination Wire: Red/Blue
Car Radio Dimmer Wire: Red/Yellow
Car Radio Antenna Trigger: N/A
Car Radio Amp Trigger Wire: N/A
Front Speakers Size: 5? x 7?
Front Speakers Location: Doors
Left Front Speaker Wire (+): Pink
Left Front Speaker Wire (-): Blue
Right Front Speaker Wire (+): White
Right Front Speaker Wire (-): Black
Rear Speakers Size: 5? x 7?
Rear Speakers Location: Roof Mount
Left Rear Speaker Wire (+): Light Green
Left Rear Speaker Wire (-): Purple
Right Rear Speaker Wire (+): Blue
Right Rear Speaker Wire (-): Pink

does this help, or do you need more?

1990 Toyota Camry 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 Power Antenna Trigger Wire: Black/Red
Radio Amplifier Turn On Trigger Wire: N/A
Front Speakers Size: 3 1/2?
Front Speakers Location: Dash
Left Front Speaker Wire (+): Pink
Left Front Speaker Wire (-): Purple
Right Front Speaker Wire (+): Light Green
Right Front Speaker Wire (-): Blue
Rear Speakers Size: 5 1/4?
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

Check in your fuse panel....

1995 Nissan Pathfinder Car Stereo Radio Wiring Diagram
Car Radio Constant 12V+ Wire: Pink
Car Radio Switched 12V+ Wire: Blue
Car Radio Ground Wire: Gray
Car Radio Illumination Wire: Red/Blue
Car Radio Dimmer Wire: Red/Yellow
Car Radio Antenna Trigger: N/A
Car Radio Amp Trigger Wire: N/A
Front Speakers Size: 5′ x 7′
Front Speakers Location: Doors
Left Front Speaker Wire (+): Pink
Left Front Speaker Wire (-): Blue
Right Front Speaker Wire (+): White
Right Front Speaker Wire (-): Black
Rear Speakers Size: 5′ x 7′
Rear Speakers Location: Roof Mount
Left Rear Speaker Wire (+): Light Green
Left Rear Speaker Wire (-): Purple
Right Rear Speaker Wire (+): Blue
Right Rear Speaker Wire (-): Pink

I had the same problem and the flasher is not located in the fuse box because it is not a normal flasher. the cougar has an electronic flasher unit that is located on the left side of the center console. the best and cheapest place to order a new one is amazon.com. they run about $30-$40

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
-->