My l/r channel will not work

Are you sure you wired up the head unit correctly? It is fairly uncommon for a audio output amplifier to blow out leaving 3 working speakers and 1 not working. So more than likely it is bad wiring or a blown speaker. Best bet would be get a digital multimeter and ohm out the speaker and see if it has continuity and is the same as the adjacent speaker. You could also try swapping the left/right channel wiring and see if the front right speaker stops working when connected to the left speaker output or vice versa.

are you sure you didnt wire the amplifier the front and rear to
left/ right?

check your deck settings to see that the rear speaker rca are connected.
check all wires are connected.
push the mono or bridge buttons are off.

provide more info.

First check the speakers by connecting to front connector if thr no sound then replace the speakers.If you here sound while swap the rear amp IC might be damaged replace the IC .

check your speaker wiring, make sure both terminals are connected properly. or could just be left speaker is disconnected. and is set in stereo mode which will only play left and right front and Sub, if you have one. try chaning the surround mode to play in multi channel speaker which will send sound to all speakers. i trust your using a Digital audio cable from your source ( cable box, DVD player) if your using analog audio cable you will only get stereo sound, and nothing will ever come out of the rear speaker unless you change the surround mode to multi- channel speaker. also in the setup menu you should be able to perform a speaker setup, make sure all your speakers are able to produce sound. follow speaker setup mode in menu, make sure you have checked the boxes or Yes to speaker you have in your system. then perform calibration and a test tone will come out of each speaker as you select them.

I suggest you ignore the rear speaker connections.
OR
Get another 2 speakers and wire up the rear speakers.

Well, very common with JVC's to loose channels, JVC's tend to burn out or, skip, or their channels die out. Easiest fix is to replace it with a Sony or Pioneer but if not an option then use the rear left channel to run both left front and left rear speakers. Wire the left front + and left rear + to the solid green rear + wire on the car harness adapter and the left negatives to the green w / black rear negative channel wire. This will be a temporary fix but you need to fix or replace the radio otherwise the speakers will draw aheavy load from the rear left channel of the radio and probably overheat or burn out on you with long time hearing or at high volumes.

Good luck.
Please rate and vote if I helped. Thanks.

If you disconect the wires to the cartridge and with deck plugged in to the amp and switched on, you can touch the ends of the wires with your finger. Though there are four wires, only two should produce a buzz, one in the left, one in the right speakers. If you get a buzz in each channel, the rest of the unit is working fine and you have a faulty cartridge or a poor connection to it. If one channel remains dead, then you have a problem in the wires to your amp or an internal fault inside the deck. If internal I suggest you remove the bottom of the turntable and have a look around.

1992 Cadillac Eldorado Car Radio Wiring Schematic
Car Radio Battery Constant 12v+ Wire: Orange
Car Radio Accessory Switched 12v+ Wire: Yellow
Car Radio Ground Wire: Black
Car Radio Illumination Wire: Gray
Car Stereo Dimmer Wire: Brown
Car Stereo Antenna Trigger Wire: Pink
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 (+): 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: 6′ x 9′
Car Audio Rear Speakers Location: Rear Deck
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

its due to your player there is nothing wrong with fuse... don't crack the case...try this just connect M1 & M2 to the aux input of your home theater

since it worked before and you didnt change anything and now there is no power it looks like you blew a fuse when connecting wires. check the radio fuse on the door panel, and check the int. lighting fuse under the hood of the car. take both out and see if they are blown, if blown buy new fuses and replace.


heres the wiring diagram for a 1990 Ford Taurus:

Left Front (+) orange/lt green
Left Front (-) lt blue/white or Blk
Left Rear (+) pink/lt green
Left Rear (-) dk blue/ orange or Blk/Wht
Right Front (+) Wht/Lt green
Right Front (-) Dk green/ orange
Right Rear (+) pink/Lt blue
Right Rear (-) Tan/White
Lt green/yellow Hot at all times
Black - Ground
Yellow/Blk - Ignition
Lt blue/red - Acc
Orange/blk - Dimmer Lights
RED - Lights