I have lost all signal from my stereo. When I turn the key there is a pop that comes from passenger rear speaker then nothing. I pulled out that speaker to check for a short but I can't see any visable problem in the speaker. Let me know if you have any insight.

I suspect you have a factory amplifier somewhere. Now would be a good time to find a tech.

lock and unlock passenger door with the key this will reset the alarm

i split the diagram in two just prtin and paste. and please leve 4 thumbs up thanks

No the turn signal is seperate from the stereo,what happen is that accessing the turn signal wire the power to the radio was interrupted, the solution did you blow a fuse?Can you push the radio and rear speaker come alive it just something that got interfered with the speaker wire cannot connect to a constant power as a turn signal but must be from radio controls and radio out let only

Hello.... I am sorry to hear you are having problems. The reason for this is that since you have a stock stereo, the shop (or person) whom installed the amp and subs used a line out converter. What this part does is allows the connection of RCA cables to the factory head unit. Almost all bass signals are always in stereo, so since you were only hooking an amplifier for just subs, you can actually just connect to just one of the rear speakers instead of connecting to the right and left. Just makes the install a little quicker. There is nothing wrong with this as I usually do the same thing in our shop. However, if you are going to be using the balance control, then you will need to go back to the shop and have them hook the converter up in stereo (to both rear speakers). Hope this helps!

20 year car audio/video installer
Bay manager

The Wht/Blue wire is allways 12 volts; The Ylw/Red is switched only when the car key is on accessories.

1994 Isuzu Amigo Car Radio Wiring Schematic
Car Radio Battery Constant 12v+ Wire: White/Blue
Car Radio Accessory Switched 12v+ Wire: Yellow/Red
Car Radio Ground Wire: Black
Car Radio Illumination Wire: Blue/White
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: Dash
Left Front Speaker Positive Wire (+): Blue/Green
Left Front Speaker Negative Wire (-): Gray/Black
Right Front Speaker Positive Wire (+): Red/Green
Right Front Speaker Negative Wire (-): Brown/Black
Car Audio Rear Speakers Size: 5 1/4′
Car Audio Rear Speakers Location: Side Panels
Left Rear Speaker Positive Wire (+): Blue/Yellow
Left Rear Speaker Negative Wire (-): Gray/White
Right Rear Speaker Positive Wire (+): Red/Yellow
Right Rear Speaker Negative Wire (-): Brown/White

there are 2 diagrams listed, one is correct, match the listed wire colors to your car to choose the correct one.
!.
Car Radio Battery Constant 12v+ Wire: Pink
Car Radio Accessory Switched 12v+ Wire: Blue
Car Radio Ground Wire: Gray
Car Radio Illumination Wire: Red/Blue
Car Stereo Dimmer Wire: Red/Yellow
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: 6 1/2′
Car Audio Front Speakers Location: Doors
Left Front Speaker Positive Wire (+): Pink
Left Front Speaker Negative Wire (-): Blue
Right Front Speaker Positive Wire (+): White
Right Front Speaker Negative Wire (-): Black
Car Audio Rear Speakers Size: 6′ x 9′
Car Audio Rear Speakers Location: Side Panels
Left Rear Speaker Positive Wire (+): Light Green
Left Rear Speaker Negative Wire (-): Purple
Right Rear Speaker Positive Wire (+): Blue
Right Rear Speaker Negative Wire (-): Pink

2.
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: N/A
Car Stereo Amp Trigger Wire: Green/White
Car Stereo Amplifier Location: Under the Passenger Front 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

There is not an easy answer for this one. Some troubleshooting needs to be done. I have seen the Rockford Fosgate system in many of the newer Sentra's. Try hooking a known working speaker to a nonworking position. This will tell if it is a speaker problem. If the problem persists, this could be stereo or amplifier.
Terrible reception troubleshooting, a bad antenna will give poor FM and no AM. If both have bad reception, this is a stereo problem. You can remove the stereo from the dash, place a small pick tool or screwdriver into the antenna jack and test reception. If the reception problem clears, this is a antenna problem. I have seen car detailers pull the connector from the rear window antenna and forget to plug it back in too.

the speaker is probably worn is it factory is the speaker wires crossed need more detail

Yellow - +12V Constant Power Red - +12V Switched (accessory) Power Blue - Power Antenna Blue/White - Amp Turn-on White - Left Front Positive Speaker Wire (LF+) White/Black - (LF-) Gray - Right Front Positive Speaker Wire (RF+) Gray/Black - (RF-) Green - Right Rear Positive Speaker Wire (RR+) Green/Black - (RR-) Purple - Left Rear Positive Speaker Wire (LR+) Purple/Black - (LR-)