My Stereo won't power on. Is there a fuse for that?

hmm... well normally that line will also power the clock but i cant see it drawing that much power :/ If you take that fuse out does it still flatten your battery? what about immobilizer? or car alarm? but whatever it is... you may have to divert power to ignition instead of accessories so that it only uses power when the key has been turned to 'on' position... but there's definitely something using power there.... I'm curious!

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2002 GMC Envoy Car Stereo Wiring Chart
Car Radio Battery Constant 12v+ Wire: Orange
Car Radio Accessory Switched 12v+ Wire: The radio harness does not provide a switched power source. Run a wire to the fusebox or ignition switch harness for switched power.
Car Radio Ground Wire: Black/White
Car Radio Illumination Wire: N/A
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: N/A
Car Audio Front Speakers Location: N/A
Left Front Speaker Positive Wire (+): Tan
Left Front Speaker Negative Wire (-): Gray
Right Front Speaker Positive Wire (+): Light Green
Right Front Speaker Negative Wire (-): Dark Green
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 (-): Yellow
Right Rear Speaker Positive Wire (+): Dark Blue
Right Rear Speaker Negative Wire (-): Light Blue

Im not familiar with the Sentra radio, but on two car radios that I have, there is a display button that switches between frequency and clock when the radio is on. If you push this button with the radio off the light goes out. Hope this helps.

Chris.

For Radio related problem,the help links are below.Click the link below to go through its procedure:-----Car radio works but CD player not working? http://technoanswers.blogspot.in/2012/02/car-radio-works-but-cd-player-not.html-----------How to reset Radio code after car battery is died?

http://howtobyme.blogspot.com/2011/12/how-to-reset-radio-code-after-car.html

------------- Can car radio code block Passkey anti theft system ?

http://schematicsdiagram.blogspot.com/2011/12/can-car-radio-code-block-passkey-anti.html

------------
How to wire new car Radio?

http://schematicsdiagram.blogspot.com/2011/12/how-to-wire-new-radio-on-1990-toyota.html

--------------
Radio Stereo Wiring Diagram?

http://schematicsdiagram.blogspot.com/2011/12/radio-stereo-wiring-diagram-for-1991.html

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How to remove radio on Car models?

http://repairhelpcenter.blogspot.com/2011/11/how-to-remove-radio-on-acura-car-models.html

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Where is Radio Fuse located?

http://schematicsdiagram.blogspot.com/2011/12/where-is-radio-fuse-located-on-2007.html

----------- After Market Stereo wiring?

http://schematicsdiagram.blogspot.com/2011/12/after-market-stereo-wiring-for-1999.html

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car radio doesn't allow to switch to the XM Band to get the radio ID?

http://schematicsdiagram.blogspot.com/2012/01/chevy-car-radio-doesnt-allow-to-switch.html

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No power to radio Scion Xb?

http://repairhelpcenter.blogspot.com/2012/01/no-power-to-radio-on-2005-toyota-scion.html

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Radio has power but no sound?

http://repairhelpcenter.blogspot.com/2012/01/lexus-rx330-radio-has-power-but-no.html

-------------
Radio goes ON and OFF while driving?

http://technoanswers.blogspot.com/2012/01/radio-goes-on-and-off-while-driving.html

-------------
Town Car Radio stereo wiring?

http://technoanswers.blogspot.in/2012/02/lincoln-town-car-radio-stereo-wiring.html

------------
Radio wiring diagram for Car?

http://technoanswers.blogspot.in/2012/02/radio-wiring-diagram-for-1997-lincoln.html

--------------
How to remove cd player from dash?

http://technoanswers.blogspot.in/2012/01/how-to-remove-cd-player-from-dash-on.html

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This will help.

Thanks.

Change out your ACC Relay. It is located on drivers side behind kick panel in fuse box. It is Black and rectangular shaped. Check for moisture. Many times water comes off driver door Chanel right into fuse box. Open driver door look for holes in front panel. ACC Relay is under 10 bucks at auto parts store.

There is usually 2 power sources to that stereo, one for when key on & one constant for radio memory & clock, you know that right? Check for that& Make sure it has good ground also. Use another ground source from back of stereo to metal just to be sure, if no luck, probably time for new stereo.

check all your fuses,,,sometime the radio display is on a separate fuse.....