Question about Car Audio & Video
It sounds like you have a bad speaker. If you do have one, it may be really loud, or, it may be making noise. When you figure out which speaker it may be, disconnect it after the power is off, remove the speaker and put an ohmeter across the terminals of the woofer on it. It shouldn't read less than 4 ohms. Sometimes speaker mfgr's make them in 3 ohm and this would affect the output. The output of the stereo could be either shorted to ground somewhere, a mild short may allow the outputs to work but may eventually burn them up. I would test the speaker wires on the back of the radio with an ohmeter to see if they are shorted or see if they read below 4 ohms on each set of speaker wires when the stereo plug is disconnected.
Sometimes the speakers have crossovers in them which would interfere with the readings, but, you could always disconnect the crossover terminal wires temporarily if you could manage not to ruin them. All in all, the stereo sounds like it is going into protection from a bad speaker, or, possibly low voltage from a loose ground, bad ground, or a bad wire connection. test the voltage from the yellow wire to ground on dc volts with a good digital voltmeter to be sure you are running at 12 volts with the car off minimum, or, 13.5 to 14 volts with the car running. The same with the red wire. Test across the yellow and black, then, find a good shiny piece of metal under the dash, and connect one meter probe to this, then connect it to the black ground wire to check resistance. The meter needs to be on ohms and it should read 1 ohm or lower to show it has a good ground. If it is higher, it may be the problem, especially if it is like 15 or 20 ohms or higher.
Let me know if you still need assistance. I repair this all, but i am in Connecticut.
Posted on Dec 02, 2014
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Posted on Jan 02, 2017
You can put a USB thumb drive in this port, and it will play mp3 files from that drive.
You can also buy an iPod interface that will let you plug in an iPod or iPhone to the USB port.
Posted on Jan 27, 2010
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