I installed a Sony aftermarket stereo into my '99 saturn car recently. I usually just hook up the red, yellow, and ground wires first to make sure northing is wrong. When i do, the unit makes an ejecting noise, but the front display does not turn on. I checked fuses, wiring, everything is hooked up right. Could it be that a different size fuze is needed, or that a different wire, other than the yellow, red, and ground is needed for the display to turn on?
There are some tests you can perform for checking the stereo. Yes, you are right, there is a yellow and red wire. Yellow constant power, red is switched throught the ignition. During the installation, you may have blown a fuse. A bigger fuse is not needed, stick with the same size if you find a bad fuse. Hook the red and yellow wire together for TESTING PURPOSES to one or the other of the hot wires in the vehicle. This will also test to see if you have a bad fuse. If the stereo powers up in one or the other power connections in the car and works, you have a blown fuse. I have seen some fuses be located under the hood of the car near the car battery. Hope this helps, Bob
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
1992 Saturn SL2 Car Stereo Radio Wiring Diagram
Car Radio Constant 12V+ Wire: Orange Car Radio Ignition Switched 12V+ Wire: Yellow Car Radio Ground Wire: Black Car Stereo Illumination Wire: Gray Car Stereo Dimmer Wire: Brown Car Stereo Antenna Trigger Wire: N/A Car Stereo Amplifier Trigger Wire: N/A Front Speakers Size: 6 1/2′ Front Speakers Location: Doors Left Front Speaker Wire (+): Tan Left Front Speaker Wire (-): Gray Right Front Speaker Wire (+): Light Green Right Front Speaker Wire (-): Dark Green Rear Speakers Size: 6 1/2′ Rear Speakers Location: Rear Deck Left Rear Speaker Wire (+): Brown Left Rear Speaker Wire (-): Yellow Right Rear Speaker Wire (+): Dark Blue Right Rear Speaker Wire (-): Light Blue
Car Radio Battery Constant 12v+ Wire: Green/Yellow
Car Radio Accessory Switched 12v+ Wire: Yellow/Black
Car Radio Ground Wire: Chassis Car Radio Illumination Wire: Blue/Red Car Stereo Dimmer Wire: N/A Car Stereo Antenna Trigger Wire: N/A Car Stereo Amp Trigger Wire: N/A Car Stereo Amplifier Location: N/A Car Audio Front Speakers Size: 5 1/4′ Car Audio Front Speakers Location: Doors Left Front Speaker Positive Wire (+): Orange/Green
Left Front Speaker Negative Wire (-): Black/White
Right Front Speaker Positive Wire (+): White/Green
Right Front Speaker Negative Wire (-): Black/White
Car Audio Rear Speakers Size: 6′ x 9′
Car Audio Rear Speakers Location: Rear Deck
Left Rear Speaker Positive Wire (+): Pink/Green
Left Rear Speaker Negative Wire (-): Pink/Blue
Right Rear Speaker Positive Wire (+): Pink/Blue
Right Rear Speaker Negative Wire (-): Green/Orange
Solid black is always ground on aftermarket head units. Red is usually the ignition wire, ie when you turn your car on, your stereo turns on. Hot or positive is usually yellow and usually the biggest wire
Automobiles use Direct Current "DC" and is very dependant on a good ground. The black wire from your stereo should be the ground and needs to be attached to the chassis "metal part of the car". You can use an ohm meter to check for grounds by placing one lead on your door hinge (unpainted) and the other to where you are connecting your ground from the stereo. Be sure that this wire does not have voltage on it with the key off, on acc, or in the on position or you could blow a fuse or damage your equipment. Besides that make sure that you have 12v constant to the (usually red wire) and switched (voltage only with the key on) to (usually the yellow wire). Hope that helps. It's mostly about the ground.
What kind of car do you have? This can make the difference. Many cars with small engines (eg. Geo Metro) simply do not generate enough power to operate the radio. Other times the car can generate enough power to support the radio, but when you plug something into the cigarette lighter/power outlet the radio shuts off because the car isn't powerful enough to handle both. The first thing you need to do is to make sure that the car's electrical output is sufficient to operate the radio, after that it would be a good idea to make sure that all of the wires are connected properly.