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Big 3 Upgrade... Ground wires by JZeFF
Started on: 01-23-2008 12:00 PM
Replies: 11
Last post by: Pyrthian on 01-24-2008 08:52 AM
JZeFF
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Report this Post01-23-2008 12:00 PM Click Here to See the Profile for JZeFFClick Here to Email JZeFFSend a Private Message to JZeFFDirect Link to This Post
Im looking to replace all the major ground wires on my car... Car audio people call them "The big three"
Battery to alt... And to be honest i dont know the rest.... haha

I have heard replacing the ground wires can do alot of good...
My problem is that i dont know where the wires are to be replaced... and better yet what gauge wire or type of wire to replace them with. Does anyone have some scans that show the major ground wires? Or a picture...
Any help will be greatly appreciated.

Its an 85 duke btw....
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ltlfrari
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Report this Post01-23-2008 12:06 PM Click Here to See the Profile for ltlfrariClick Here to visit ltlfrari's HomePageClick Here to Email ltlfrariSend a Private Message to ltlfrariDirect Link to This Post
I think there's a diagram of all the ground points in the service manual. Don't have mine to hand right now tho


There's one here for an 86, probably very similar.

http://spad.sytes.net/fiero/manuals/

[This message has been edited by ltlfrari (edited 01-23-2008).]

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86GT3.4DOHC
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Report this Post01-23-2008 02:04 PM Click Here to See the Profile for 86GT3.4DOHCSend a Private Message to 86GT3.4DOHCDirect Link to This Post
Are you having problems with something? You're going to see an improvement or power gain just from replacing ground wires. If you're having a miss or odd engine problem, sometimes adding a ground can help, particularly if your old ones are missing or corroded. It is true resistance can increase in a wire with heat time and corrosion, but replacing battery wires isnt exactly routine maintance. Check the ends for strain breaks and clean corrosion and you'll be fine.

Replacing the wires isnt going to do much more than just cleaning the connections would. The problems usually occur where the connections are, moisture gets in there and corrodes the metals. If you're really desprate, just add a ground from the battery to the strut tower.

The main wires you need to be concerned with are the following
Ground from battery to engine. This is on the front head on the V6 ?4cyl
Main power from engine to starter
Power from battery to distribution block on the right rear fenderwell (just below C500)
Power connection on the alternator. There is also a soildered splice about 8" up from the alternator connection, Ive seen this corrode out.
I think there is another ground off the battery too.

If you really need to, there is also a main cocpit ground under the center console, on the passenger side a little up from the rear firewall.

[This message has been edited by 86GT3.4DOHC (edited 01-23-2008).]

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Indyrestoration
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Report this Post01-23-2008 03:03 PM Click Here to See the Profile for IndyrestorationClick Here to Email IndyrestorationSend a Private Message to IndyrestorationDirect Link to This Post
I also would like to replace the ground wires on my 84 Indy. Where are the main groud wires on the 84. I have replaced the one from the top of the motor to the decklid hinge. Also, what is the best way to reach the one mentioned in the last post, under the center consul.

Eric
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jb1
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Report this Post01-23-2008 06:35 PM Click Here to See the Profile for jb1Click Here to Email jb1Send a Private Message to jb1Direct Link to This Post
BATT TO ALT BLOCK TO FRAME FRAME TO BATT
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JZeFF
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Report this Post01-23-2008 07:09 PM Click Here to See the Profile for JZeFFClick Here to Email JZeFFSend a Private Message to JZeFFDirect Link to This Post
Ummm, what gauge wire should i use? Is there something special i need?
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Emc209i
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Report this Post01-23-2008 07:21 PM Click Here to See the Profile for Emc209iClick Here to Email Emc209iSend a Private Message to Emc209iDirect Link to This Post
8-16 gauge wire would be fine for the grounds. I'd use 4 gauge wire for the hot ends.
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Emc209i
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Report this Post01-23-2008 07:22 PM Click Here to See the Profile for Emc209iClick Here to Email Emc209iSend a Private Message to Emc209iDirect Link to This Post

Emc209i

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quote
Originally posted by JZeFF:

Is there something special i need?


No, anything that conducts.
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jb1
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Report this Post01-23-2008 10:09 PM Click Here to See the Profile for jb1Click Here to Email jb1Send a Private Message to jb1Direct Link to This Post
As much current passes through grounds as it does the pos. if going to upgrade atleast go to a 4awg on grounds or not bother. I have 2 awg grounds on mine.
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$Rich$
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Report this Post01-23-2008 10:12 PM Click Here to See the Profile for $Rich$Click Here to Email $Rich$Send a Private Message to $Rich$Direct Link to This Post
http://www.fiero.nl/forum/Forum2/HTML/043240.html

[This message has been edited by $Rich$ (edited 01-23-2008).]

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josef644
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Report this Post01-23-2008 10:29 PM Click Here to See the Profile for josef644Click Here to Email josef644Send a Private Message to josef644Direct Link to This Post
There is one between the headlight and the fender on both sides of the car. These grounds let the fan work, and is also the ground for the lights on each of its side of the car
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Pyrthian
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Report this Post01-24-2008 08:52 AM Click Here to See the Profile for PyrthianClick Here to Email PyrthianSend a Private Message to PyrthianDirect Link to This Post
 
quote
Originally posted by $Rich$:

http://www.fiero.nl/forum/Forum2/HTML/043240.html



thanks - I was looking for this thread.
could not remember keywords to search for

and, another for the "+" lines:
http://www.fiero.nl/forum/A...060206-2-065518.html

excellent thread about replaceing the grounds AND the fusable links.
new grounds, fusable links, and a CS alternator will do wonders for these little cars. it will actaully smooth out the idle. brighten your headlights. get you windows up & down quickly. get your wipers to go faster. make your battery last longer & be stronger.

that thread should be stickied

[This message has been edited by Pyrthian (edited 01-24-2008).]

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