Question about 2004 Lincoln Town Car

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Where is the ground wire bolted to on a 2004 Lincoln Town Car

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  • Lincoln Master
  • 3,519 Answers

Hi Jimmy:
Ted again...
The ground wire that is connected to the stereo is to be attached to a common ground or to the frame.

Posted on Apr 01, 2015

Testimonial: "Thanks ted!!! U rock bro"

  • 5 more comments 
  • Jimmy Stacks
    Jimmy Stacks Apr 01, 2015

    Right I got that ted,but the problem is I don't know where on the car it is at

  • Ted Maxwell Apr 01, 2015

    Hi Jimmy: Have a look at the battery. The negative terminal will have a big wire that will lead to a place where it is bolted to the frame or engine, Sometimes there will be a smaller black wire that will go to one side of the fuse panel, or to a location under the dash. Most accessory grounds, like lights, will go to the frame, but some may have a separate ground wire that goes to the common ground. Either way, as long as the ground is "clean" your stereo should work fine,

  • Jimmy Stacks
    Jimmy Stacks Apr 01, 2015

    thanks mann,I'm at work right now but boy I can't wait to see if your idea works my stereo system gives me way too much trouble in the subwoofer it like shorts and it out so to me it sounds like my ground wire isn't clean or is not grounded I'm not really sure but like I said I can't wait to get out of work to find out if you're right it sounds like it would make sense though thanks again man

  • Jimmy Stacks
    Jimmy Stacks Apr 01, 2015

    so would you happen to know which one of these wires that are hooked into my amp are the ground wire there is a blue and red wire which i think is the memory are red and yellow wire a black and green wire or brown and orange wire and a red and black wire I'm not really sure which one that goes into the amp is the ground wire I was just thinking maybe I could run a new ground what do u think

  • Ted Maxwell Apr 01, 2015

    Hey Jimmy: The red and black should be thicker and will be power (Red) and ground ( black) All those other ones should be a lighter guage and will be paired for he speakers. Don't try to turn on the stereo unless the speakers are connected as it is possible to do nasties to the internals.

  • Jimmy Stacks
    Jimmy Stacks Apr 01, 2015

    ok I'll disconnect the battery terminals first but are u saying I can run the new ground wire?

  • Ted Maxwell Apr 02, 2015

    Disconnecting the battery terminals is always a good idea if you're working on the electrical system. If your stereo is "typical, the heavier RED wire is for the power supply to the unit, so it ultimately gets connected to the positive terminal. It could be through the fuse panel, or on a totally separate wire if you want, but protect it with a fuse. The heavier black wire gets connected to ground. This could be to any other handy ground, to a separate screw into any grounded metal part, or to a separate wire to the negative terminal on the battery. IT IS NOT A GOOD IDEA TO TURN THE STEREO ON UNLESS THE SPEAKERS ARE CONNECTED. That's because the output wants to have someplace to go and if the speakers are not connected, the stereo gets electrically constipated and that's not healthy.

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SOURCE: 2004 Lincoln Town Car

Hi,

As in most electrical problems, it would be required to do a bit of tracing/diagnosis to determine which is at fault. Most automotive horn system works on the same basic design. A switch in the steering wheel that energizes the horn relay that in turn powers the horn(s). A self activating horn could be caused by:
1: intermittent short in the steering wheel horn button;
2. intermittent shorting out horn relay;
3. intermittent short in the wiring.

Basing on the above possibilities, diagnostic/corrective action would involve:
a. tapping on the steering wheel (not the horn button) to see if jarring it would activate the horn, if yes then the problem is with the horn switch and often cleaning the inside/contact points of the switch should be corrective;
b. tapping the horn relay with the handle of a screwdriver to determine if jarring it would activate the horn, if yes then the problem is with the horn relay which of course would need replacement;
c. the wiring would be a bit more complicated if not time consuming. It would be necessary to wiggle the wires coming from the steering wheel/column to the main harness, to the fuse/relay bank finally to the horn to check at which point the trouble would resurface. Taping any exposed/bare/scraped wire would be corrective. It should be noted that the steering horn switch often would be "to ground" meaning the horn switch is switching the horn relay by providing the negative path, the relay is constantly supplied with B+12.

There are some instances that the horn could also activated by an alarm system.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Thank you for using FixYa.

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