Nothing coming from 12Volt line going into the stereo on 2001 Grand Marquis

Asked by Apr 27, 2018 at 03:52 PM about the 2001 Mercury Grand Marquis

Question type: General

I removed the factory stereo, and matched the pigtail of the aftermarket Dual
stereo, color for color. Didn't work. I went back and checked the wires with a
voltmeter and am getting the required voltage on all of them EXCEPT the
battery constant, which reads 0.  I checked the fuses, and all other
electricals are working as far as I can tell. The factory stereo was operating
just fine up until I performed this install, so I am at somewhat of a loss as to
what to do. Any guidance on how to further trouble shoot this?

1 Answer


You should have bought an adapter cable from Amazon. The colors may not match. Buy the adapter, and put the old socket back on the pigtail. Obviously the power wire is a different color, with a voltmeter, you could figure which is which, but with the adapter, it's easy.

Your Answer:

Mercury Grand Marquis Experts

  • #1
    Tracy Hooks
  • #2
  • #3
View All

Related Models For Sale

Used Lincoln Town Car
10 listings starting at $5,995
Used Ford Crown Victoria
14 listings starting at $2,990
Used Chevrolet Impala
34 Great Deals out of 1,011 listings starting at $2,995
Used Ford F-150
133 Great Deals out of 10,321 listings starting at $2,000
Used Honda Accord
27 Great Deals out of 1,742 listings starting at $1,995
Used Ford Mustang
31 Great Deals out of 1,796 listings starting at $4,800
Used Chevrolet Tahoe
13 Great Deals out of 1,280 listings starting at $3,690
Used Toyota Camry
40 Great Deals out of 1,658 listings starting at $1,995
Used Chevrolet Silverado 1500
65 Great Deals out of 10,463 listings starting at $4,750

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.