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#2381312 - 10/01/11 05:33 PM Radio Ground Wire for a 2003 Crown Vic
irish32 Offline
n00b

Registered: 09/29/09
Posts: 13
Loc: Yonkers, New York
Hello everyone, I have an issue with my radio. My radio lights up when I turn on the headlights but the time/display does not turn on and no sound comes from the radio. The radio itself is fine because I had tried it out before on a different Crown Vic. The previous owner of the car had a separate stereo/speaker system which he had separate wiring for. I believe he might have cut the ground wire but I could be wrong. Pretty much my question is, what would cause the radio not to work? I don't get any static, no sounds whatsoever. I have tried a different radio in the car as well and still nothing. Any help is appreciated. Sorry if I posted this in the wrong section.

If you guys think it might be something other than a ground wire issue, please let me know.
_________________________
2003 Ford Crown Victoria P71 with 80,000 miles
1999 Ford Crown Victoria P71 with 132,000 miles
1973 Dodge Charger SE Brougham 318 Engine
1971 Cadillac Eldorado Convertible with 65,000 miles

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#2381372 - 10/01/11 08:07 PM Re: Radio Ground Wire for a 2003 Crown Vic [Re: irish32]
hellraiser319 Offline
Over the Hill

Registered: 01/26/10
Posts: 1557
Loc: Dekalb/N. Aurora, IL
First and foremost check fuses.. #3 and #17 if P71, #1 and #13 if not. Both in the dash fuse box. Radio lighting up is a completely different circuit, parking lights.
_________________________

Chris H.
03 CVPI & 96 Aspire, see fquick link for info
MECP Advanced - CEA170106 - Best Buy #1778 - N. Aurora, IL
XBL, PSN, FB, FQuick, TCG = hellraiser319


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#2381514 - 10/01/11 11:55 PM Re: Radio Ground Wire for a 2003 Crown Vic [Re: irish32]
Tracy Offline
Over the Hill

Registered: 09/07/09
Posts: 3834
Loc: West Bend, WI, USA
If you look here -- http://www.idmsvcs.com/2vmod/radio/index.html -- it provides pinouts of the connectors. Other than that I'm not sure what's going on, sounds as if the previous owner did a hack job on the radio's wiring for some reason.
_________________________
1999 Deep Wedgewood Blue & Rust P71, 21x,xxx miles, full cloth interior, 3L55 RAR, BH1976 Headlight Relay Harness, and a few other mods. Former Chippewa Falls, WI PD car. I'm the 3rd owner of car.
Now with Mustang Wheels, Honeycomb Grille, and Ford AM/FM CD player with RDS.



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#2381526 - 10/02/11 12:21 AM Re: Radio Ground Wire for a 2003 Crown Vic [Re: irish32]
Black_Sunshine Offline
Poobah

Registered: 12/09/10
Posts: 7901
Loc: AZ
Um, if the thing lights up, it's grounded.

Most likely the speakers aren't hooked up. If the previous owner had a full system installed the speakers were wired to an amp bypassing the factory speaker wires. Does the car have speakers in it? Are they hooked up to the factory wires? Does the radio plug in the dash look normal? Usually it's not messed with when installing a big system.
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2005 Grand Marquis GS Two Tone Edition

Vibrant White over Arizona Beige

The GS Two Tone Package includes:
• hood ornament
• c-pillar emblems
• LS style body side moldings
• body color mirror caps (the b-pillars are body color too, but I don't know if that is package specific)
• two tone interior (mine is leather and includes embossed logos on the seats)
• front door sill plates that say ‘Grand Marquis’

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#2381565 - 10/02/11 01:37 AM Re: Radio Ground Wire for a 2003 Crown Vic [Re: Black_Sunshine]
Carter Offline
Member

Registered: 10/03/08
Posts: 385
Loc: Michigan
Is this a PI or Civilian?

Originally Posted By: Black_Sunshine
Um, if the thing lights up, it's grounded.

Not Necessarily...

If its a civilian CV more than likely you have the 24 and 16 pin harness. I don't know if there are multiple grounds within the 16 pin PI harness if you have a CV PI. There are multiple grounds in the 24 pin harness. So even if it lights up with the headlights that is a separate ground. In later years however they removed the separate ground wires. So like HellRaiser319 said check the fuses first then look for cut grounds.
_________________________
2003 Mercury Grand Marquis GS M74 62k - Current
Mods- Marauder Cluster Swap w/ Autometer 9117 TA, Auto dimming Gentex Mirror, Overhead Console w/ Home link Compass, 6000K H.I.D. w/ Philips Ballasts, 06+ Audiophile CD6 Radio with XM Satillite Radio Direct Connect, Wood/Leather Steering Wheel with Redundant Controls, Boston 10" sub with Boston Component Speakers.
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#2381668 - 10/02/11 10:17 AM Re: Radio Ground Wire for a 2003 Crown Vic [Re: irish32]
Black_Sunshine Offline
Poobah

Registered: 12/09/10
Posts: 7901
Loc: AZ
I guess that makes sense my '05 only has one ground but I think they changed the connector for '05.
_________________________


75mm DBW TB

Click to reveal..

2005 Grand Marquis GS Two Tone Edition

Vibrant White over Arizona Beige

The GS Two Tone Package includes:
• hood ornament
• c-pillar emblems
• LS style body side moldings
• body color mirror caps (the b-pillars are body color too, but I don't know if that is package specific)
• two tone interior (mine is leather and includes embossed logos on the seats)
• front door sill plates that say ‘Grand Marquis’

CarDomain

Facebook


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#2381674 - 10/02/11 10:31 AM Re: Radio Ground Wire for a 2003 Crown Vic [Re: irish32]
sanco Offline
fo shizzle
Poobah

Registered: 08/26/07
Posts: 7572
Loc: chicago, illinois
i have to agree with black sunshine and carter

if the original harness was not hacked up and you used an aftermarket plug and play harness than the likelyhood of getting it wrong is slim since all you really do is match up the colors.

also make sure your antenna wire is plugged in since that tends to be the culprit sometimes.

but yea i agree, sounds like the previous owner rewired the car and the speakers have wires going to them from an amplified system. open up the door or even look under the rear tray and try to see if there are wires with open leads going to the speakers. if you see the speakers connected to factory wiring then you have to trace the issue from the head unit up. if you see speakers just floating there with open leads then just wire them to the factory wires and it should work.

if you still have issues, then check your harness and go from there.
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#2381816 - 10/02/11 03:29 PM Re: Radio Ground Wire for a 2003 Crown Vic [Re: irish32]
irish32 Offline
n00b

Registered: 09/29/09
Posts: 13
Loc: Yonkers, New York
Everyone thank you for the replies!
I forgot to mention that it is a P71.
I changed the fuses (#3 & #17) this morning with no changes. I then took the car to my friends house (he's an electrician) so he had all the fuse testers. We went through each fuse 1 by one and fuse #1 was the problem, as soon as I changed that one the radio came on. Thanks again guys for your replies! All the best.
_________________________
2003 Ford Crown Victoria P71 with 80,000 miles
1999 Ford Crown Victoria P71 with 132,000 miles
1973 Dodge Charger SE Brougham 318 Engine
1971 Cadillac Eldorado Convertible with 65,000 miles

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#2454610 - 02/08/12 09:07 PM Re: Radio Ground Wire for a 2003 Crown Vic [Re: irish32]
AWE_Alex Offline
Poobah

Registered: 12/26/04
Posts: 5345
Loc: Leaving your mom's driveway
Reviving a dead thread here...

Similar problem with my car. Radio went dead, yet when I press the CD eject button, radio lights up, says NO DISC and tells me the time, then shuts back off. Radio will not turn on by pressing the volume button, and no sound comes out at all. Problem started with an aftermarket stereo, then continued in a factory AM/FM only unit, and now in this CD unit from a 98 P71.

I heard somewhere that the fuses control different parts of the radio. Obviously it's getting power, but some circuits are not powering up. Anyone have a wiring diagram for this (not the pinouts)?
_________________________

2000 CVPI, GoRhino! 5038, glasspacks, 2012 Dodge Charge SE 17"s SOLD!
2004 Ford Explorer XLT, stock
Vehicle lighting covered by FL 316.2397(3)
Originally Posted By: 124neta
Its because you haven't come to terms with the fact that you actually want to see that throbber.


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#2454625 - 02/08/12 09:21 PM Re: Radio Ground Wire for a 2003 Crown Vic [Re: irish32]
TechnoWeenie Offline
Banned
Posting Addict

Registered: 10/02/04
Posts: 22857
Loc: UTL
Two fuses.

One is for radio power (hot at all times) one is for ignition.

Sounds like your ignition lead is toast, which is why it will still kick out a CD.

I don't remember the fuse # off the top of my head, but you can always test them all.
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#2454626 - 02/08/12 09:22 PM Re: Radio Ground Wire for a 2003 Crown Vic [Re: irish32]
Lamp Offline
Member

Registered: 03/17/09
Posts: 119
Loc: KS
90% sure it's the memory wire. It also acts as the exciter for the stereo. Without power there the stereo won't work correctly. I had to with exact same problem on my 06 cvpi. Turn your key on and jump the memory wire and power wire together then see what happens. Good luck.
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2006 P71. All stock.

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