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Leeke1
Leeke1 post May 26 2011, 06:28 PM   |  In Reply To Moredhel
Post #21


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actually all car model comes with grounding...just that the grounding cable is big or small...if ur car is off...the grouding resistance is basically close to 0ohm...but when u start ur car and some electronics component is working for example audio...spark plug...with the present of all these loads...the grounding resistance can be significant. so basically xtra grounding cable will help to eliminate unwanted noise..and make ur voltage more (+). Therefore it helps to so call stabilize the voltage by making it more (+). the voltage output from the alternator is not stable and sometime can create noise to ur audio system. Therefore VS can help to improve the voltage stability. but interm of performance is usually not much... it can only help to resume the original power but by a small margin.


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Smhomie
Smhomie post May 26 2011, 06:29 PM  
Post #22


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Generally speaking, cars that are used for 2-3 years have oxidized cables hence the grounding falters over time. When you change out such cables, electronics undoubtedly regain a better and complete loop. This translates into 'feel' by the drivers.

Most copper-tin cables now all supplied by China, so quality fade is evident. Japanese automakers are using China cables, so no prize for guessing why aftermarket grounding kits that use more strands per turn or better grade copper can get a slice of the automotive market rolleyes.gif
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Smhomie
Smhomie post May 26 2011, 06:34 PM   |  In Reply To Leeke1
Post #23


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QUOTE (Leeke1 @ May 26 2011, 06:28 PM) *
actually all car model comes with grounding...just that the grounding cable is big or small...if ur car is off...the grouding resistance is basically close to 0ohm...but when u start ur car and some electronics component is working for example audio...spark plug...with the present of all these loads...the grounding resistance can be significant. so basically xtra grounding cable will help to eliminate unwanted noise..and make ur voltage more (+). Therefore it helps to so call stabilize the voltage by making it more (+). the voltage output from the alternator is not stable and sometime can create noise to ur audio system. Therefore VS can help to improve the voltage stability. but interm of performance is usually not much... it can only help to resume the original power but by a small margin.


Alternator is basically AC into DC.

Rectifier, diode etc and for stability there's the in-built voltage regulator irregardless of engine rpm operation. Most cars today has voltage regulator circuit linked to ecu for variable load control.

Noise mainly is from the spark plugs hence the insulator shielding and resistor in its core.

Current always chooses the shortest path.
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C-K
C-K post May 26 2011, 06:45 PM  
Post #24


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don't know about VS but grounding really helped me solve my 12v power in my car.

Before installing the grouding kit, i was unable to charge my iphone in my car; got light at the charger but no power going in to my phone.

After grounding was done, I have no problem charging it.
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Acieed
Acieed post May 26 2011, 06:56 PM   |  In Reply To C-K
Post #25


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What were the grounding point(s) ?

QUOTE (C-K @ May 26 2011, 06:45 PM) *
don't know about VS but grounding really helped me solve my 12v power in my car.

Before installing the grouding kit, i was unable to charge my iphone in my car; got light at the charger but no power going in to my phone.

After grounding was done, I have no problem charging it.

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Leeke1
Leeke1 post May 26 2011, 07:30 PM   |  In Reply To Smhomie
Post #26


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QUOTE (Smhomie @ May 26 2011, 06:34 PM) *
Alternator is basically AC into DC.

Rectifier, diode etc and for stability there's the in-built voltage regulator irregardless of engine rpm operation. Most cars today has voltage regulator circuit linked to ecu for variable load control.

Noise mainly is from the spark plugs hence the insulator shielding and resistor in its core.

Current always chooses the shortest path.

hmm there r some thruth in it...i have seen few cases people change alternator just to solve the aeroplane sound from their expensive sound system. i believe since the spark plug r properly shielded, the noise should be suppressed effectively.
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Kb27
Kb27 post May 26 2011, 07:45 PM   |  In Reply To Acieed
Post #27


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QUOTE (Acieed @ May 26 2011, 05:38 PM) *
All cars are grounded, otherwise, your electronics all chao tar liao.

Actually, if the ground is bad, all the electronics will stop working.
Your wiper arm won't move, your signal light won't flash, your headlights won't work...etc..etc.
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Cwx7978589
Cwx7978589 post May 26 2011, 08:05 PM   |  In Reply To Smhomie
Post #28


1st Gear
Posts: 89
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QUOTE (Smhomie @ May 26 2011, 06:29 PM) *
Generally speaking, cars that are used for 2-3 years have oxidized cables hence the grounding falters over time. When you change out such cables, electronics undoubtedly regain a better and complete loop. This translates into 'feel' by the drivers.

Most copper-tin cables now all supplied by China, so quality fade is evident. Japanese automakers are using China cables, so no prize for guessing why aftermarket grounding kits that use more strands per turn or better grade copper can get a slice of the automotive market rolleyes.gif


you are right, after few years our car body was oxidated, so the grounding resistance became big, and will influence all electronics
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Cwx7978589
Cwx7978589 post May 26 2011, 08:09 PM   |  In Reply To C-K
Post #29


1st Gear
Posts: 89
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QUOTE (C-K @ May 26 2011, 06:45 PM) *
don't know about VS but grounding really helped me solve my 12v power in my car.

Before installing the grouding kit, i was unable to charge my iphone in my car; got light at the charger but no power going in to my phone.

After grounding was done, I have no problem charging it.


because your charge cannot get 12V(maybe 6V...) due to the bad grounding consumed your volt
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Acieed
Acieed post May 26 2011, 08:11 PM   |  In Reply To Cwx7978589
Post #30


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Bro, I think if you only get 6V, your engine cannot even start leh.

QUOTE (Cwx7978589 @ May 26 2011, 08:09 PM) *
because your charge cannot get 12V(maybe 6V...) due to the bad grounding consumed your volt

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Cwx7978589
Cwx7978589 post May 26 2011, 09:15 PM   |  In Reply To Acieed
Post #31


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QUOTE (Acieed @ May 26 2011, 08:11 PM) *
Bro, I think if you only get 6V, your engine cannot even start leh.

hehe .just guess, use multimeter can check it
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Mona-vie
Mona-vie post May 26 2011, 10:11 PM   |  In Reply To Leeke1
Post #32


4th Gear
Posts: 769
Warn: X----


QUOTE (Leeke1 @ May 26 2011, 06:28 PM) *
actually all car model comes with grounding...just that the grounding cable is big or small...if ur car is off...the grouding resistance is basically close to 0ohm...but when u start ur car and some electronics component is working for example audio...spark plug...with the present of all these loads...the grounding resistance can be significant. so basically xtra grounding cable will help to eliminate unwanted noise..and make ur voltage more (+). Therefore it helps to so call stabilize the voltage by making it more (+). the voltage output from the alternator is not stable and sometime can create noise to ur audio system. Therefore VS can help to improve the voltage stability. but interm of performance is usually not much... it can only help to resume the original power but by a small margin.


Sorry, not many cars come with ground. The "grounding" they use is the chassis since its made of metal and is a conductor. Thus the -ve of the battery is always connected to the battery. the -ve of the alternator is the casing itself. You won't see any cables running around solely for grounding purpose. There are ground points in the car meant for cables to attach to. However, they also use the chassis itself to conduct electricity.

In fact, I have yet to see a car that comes with any form of grounding cables other than using chassis as ground.
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Mona-vie
Mona-vie post May 26 2011, 10:14 PM   |  In Reply To C-K
Post #33


4th Gear
Posts: 769
Warn: X----


QUOTE (C-K @ May 26 2011, 06:45 PM) *
don't know about VS but grounding really helped me solve my 12v power in my car.

Before installing the grouding kit, i was unable to charge my iphone in my car; got light at the charger but no power going in to my phone.

After grounding was done, I have no problem charging it.


Did you measure the voltage before you install the grounding cable?

This is because you are supposed to be able to charge your phone w/o grounding cables. Grounding cables provides a work around but it did not solve the root problem.
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Kb27
Kb27 post May 26 2011, 10:16 PM   |  In Reply To Mona-vie
Post #34


6th Gear
Posts: 3,915
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QUOTE (Mona-vie @ May 26 2011, 10:11 PM) *
Sorry, not many cars come with ground. The "grounding" they use is the chassis since its made of metal and is a conductor. Thus the -ve of the battery is always connected to the battery. the -ve of the alternator is the casing itself. You won't see any cables running around solely for grounding purpose. There are ground points in the car meant for cables to attach to. However, they also use the chassis itself to conduct electricity.

In fact, I have yet to see a car that comes with any form of grounding cables other than using chassis as ground.

Yeap, all factory installed ground use the chassis.

A typical car can have 30 points or more of grounding on the chassis.

These grounds are unseen by many bcoz they don't open up the car to look at it.

So they think the fancy coloured ground wires are the magic cure.
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Cwx7978589
Cwx7978589 post May 26 2011, 11:19 PM   |  In Reply To Kb27
Post #35


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Posts: 89
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QUOTE (Kb27 @ May 26 2011, 10:16 PM) *
Yeap, all factory installed ground use the chassis.

A typical car can have 30 points or more of grounding on the chassis.

These grounds are unseen by many bcoz they don't open up the car to look at it.

So they think the fancy coloured ground wires are the magic cure.

yes they used the chassis to ground. But after few years the chassis oxidated
So we need extra grounding kit
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C-K
C-K post May 26 2011, 11:24 PM   |  In Reply To Mona-vie
Post #36


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Posts: 366
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QUOTE (Mona-vie @ May 26 2011, 10:14 PM) *
Did you measure the voltage before you install the grounding cable?

This is because you are supposed to be able to charge your phone w/o grounding cables. Grounding cables provides a work around but it did not solve the root problem.


Nope never measured the voltage.

Actually I had no problems with my GPS, In-car Cam, and Nokia Phones. At that time only iphone got charging problem. I think iphone 4 really needs full 12v for the power to go in while other devices don't.

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Mona-vie
Mona-vie post May 27 2011, 11:35 AM   |  In Reply To Cwx7978589
Post #37


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Posts: 769
Warn: X----


QUOTE (Cwx7978589 @ May 26 2011, 11:19 PM) *
yes they used the chassis to ground. But after few years the chassis oxidated
So we need extra grounding kit


How does the chassis oxidised when its covered with paint? If your chassis oxidised.... that means irs rusting everywhere already.....
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Mona-vie
Mona-vie post May 27 2011, 11:40 AM  
Post #38


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Actually, grounding does help because the chassis is a poor conductor of electricity. Not so much of oxidation of anything but steel does not conduct electricity as well compared to copper.

The alternator ground (or -ve point) is the chassis and it goes to the engine and conducted to the chassis thru the engine mounts. They are all either aluminium or steel which are not as good as copper. Hence voltage drops due to resistant.

The ground mounting points aren't fantastic conductors as well. If lucky, they are screw holes drilled directly onto the chassis. If not, they are pieces of metal sheets welded to the chassis using spot welding (just a few miserable spots to secure the plate). Hence conductivity is not good as well.
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Kangadrool
Kangadrool post May 27 2011, 11:43 AM  
Post #39


Supercharged
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Any recommendation for DIY grounding?

- good quality grounding kits
- instruction on DIY
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Acieed
Acieed post May 27 2011, 11:46 AM   |  In Reply To C-K
Post #40


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Posts: 1,589
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Bro, iPhone is 5V USB 2.0 power supply leh.

If the charger is not USB 2.0 compliant, it won't charge the iPhone. Need to short the centre 2 pins.

QUOTE (C-K @ May 26 2011, 11:24 PM) *
Nope never measured the voltage.

Actually I had no problems with my GPS, In-car Cam, and Nokia Phones. At that time only iphone got charging problem. I think iphone 4 really needs full 12v for the power to go in while other devices don't.

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