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Old 05-30-2005, 12:27 AM   #1
RedZx3
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Engine Ground Kit Problem

Alright, so I've been reading up on posts saying that buying an engine grounding kit will get rid of the annoying headlight flickering and dashboard light dimming. I absolutely cannot stand it when I'm driving, and I really wanted to get rid of it without buying a new alternator or spending a ton of money. I'm on a budget, so I bought a kit on eBay for $30. I made sure it was 4g copper wire, decent quality..... looks just fine.

When I installed it, I did notice a slightly smoother start, but that's about it. When it got dark, I noticed my lights were still dimming and flickering...maybe even worse then before I installed the wires. My car even felt like it wanted to die when sitting at red lights.

All of my wires are tight, secure, and cut to proper length. Also, I kept the stock wires in place...they are still connected just as they were before I put the grounding kit on.

Here are my connections:

1. Positive battery terminal to alternator. (The 4g wire I used is a little longer than the stock one, but both are still in place.)

2. Passeger side chassis to cylinder head (The car came with this wire also)

3. Negative battery terminal to driver side chassis (Also stock grounding location)

4. Negative battery terminal to the front of the cylinder head (by ' the front of the cylinder head', I mean the little hook just to the right of the header)

Did I go wrong somewhere? Are one of my grounding points killing me here? I don't get it. If you have done this mod and successfully gotten rid of the flickering, or ever reduced it, please list your wiring setup. I don't care to get rid of the flickering totally, but at least calm it down, as it is starting to scare me! Thanks in advance for the help.


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Old 05-30-2005, 03:43 AM   #2
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do you have an underdrive pulley? some people claim that their cars do this with the pulley..



personally, with a udp AND a system w/2 amps.. my car never flickered or anything...
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Old 05-30-2005, 08:11 AM   #3
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Break out a volt meter and check voltage between various ground points (e.g. cig lighter shell & battery post, doorframe jamb & engine block/battery post) if you see more than 1/10 volt or so of potential difference, you have a ground problem.

If the alternator sizing is marginal, underdrive pulley can definitely do this. With the way my Focus is built, marginal is probably right. Alternator will not produce full output until set RPM and below that RPM, the output steadily declines. Underdrive pulley lowers the RPM of every serpentine belt driven components and aggrevates the problem. You can give up the underdrive pulley or give a smaller pulley just for the alternator.

Last edited by xFOCIx; 05-30-2005 at 08:22 AM.
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Old 05-30-2005, 02:12 PM   #4
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i don't have an underdrive pulley, but I do have a 300 watt amp hooked up.... could that have anything to do with it??
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Old 05-30-2005, 02:56 PM   #5
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i kinda doubt a 300w amp would do that unless you have it hooked up wrong...


i had the focus central 1pc... w/600w rms mono pushing my 2 10" subs and a 4 channel pushing 200wrms to the other speakers... not to mention headlights, foglights, and head unit...


i never had a problem.. :::shrug:::
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Old 05-31-2005, 12:13 AM   #6
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hmmm.... well can anybody who has done a grounding kit give me some good points to put my wires??? i've tried many configurations, but I want to know what worked out good for you guys... thanks!
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Old 05-31-2005, 12:29 AM   #7
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Do your lights flicker like when you turn the stereo up or when the bass of the song hits if so then it has to do with the stereo and you will need a capacitor probably, possibly maybe a new alternator(have you had the alternator checked??).But if its not that i am not sure what it would be and would prolly suggest taking it in to the dealer and get it checked.
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Old 05-31-2005, 01:24 PM   #8
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they flicker all the time... i haven't had anything checked either....thanks for the capacitor idea
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Old 05-31-2005, 02:16 PM   #9
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1. Battery to drivers side chassis
2. Battery to cylinder head
3. Cylinder head to transmission bell housing
4. Cylinder head to TB
5. TB to passenger side chassis
(kept all the stock grounds as well)

That is mine, works fine and no flickering.
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Old 05-31-2005, 06:38 PM   #10
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i got a 600watt amp powering 2 12" subs a playstation 2 and 3 tv's on riding at nite and i dont have this problem, i also have the esslinger udp
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