Poor radio reception with Jensen VM9512 in 2001 Nissan Altima

for the poor reception have you plugged in the antenna wire into the radio

did you put it on a frequency counter? they can be set back on freq. if you know how to set it. how old is it? I would send it back to where I got it and have them fix the problem.

Have you or someone pulled out the radio in your vehicle recently it could possibly be the antenna plug isn't pushed back in all the way?

I have a 2009 Nissan Altima 2.5S and some body had cut the main harness to the radio now i dont know what color is which please help

Try moving the telescopic antenna around in different directions until you get a clear reception. If that doesn't work, try moving the whole unit (radio) to another location. Make sure you are using the tuning knob to switch between stations. Moving it to a different location may be the best thing because the radio antenna may be received in frequency waves from another electronic device (i.e. a television set, another radio or in microwave) which is causing a reception to be poor.

I would suggest installing what is called a filter capacitor.You can get these at most car audio shops or a electrolytic capacitor rated at 16v or higher and around 30uf (the capacity is not very important) you connect it from the Positive to the Negative on the radio. The idea being a capacitor will allow the A/C current (noise) to pass through to ground without going into the radio and this is usually the cause of poor reception.

Another possible cause could be simple a poor quality antenna, some manufacturers are going cheap on the antennas since most people don't listen to the radio anymore. You could try to screw an antenna off of a different car onto the base on this one and see if that clears up the problem, they are a some-what universal thread.

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.

you wanna boast up the radio signal?? There are ant. boasters around, But if your far away from a radio station your radio cant make that weak signal any higher in amplitude. All you would be amplifying is noise or static. Sorry

So what is the question? send it back ASAP. As far as i know there are a lot of problems with Jensen CDs...