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G3GM 1973 to 1977 A-bodys. Chevelles, Monte Carlos, El Caminos, Laguna, 442, Cutlass, Malibu, GTO, LeMans, Century, Regal, Grand Am, Grand Prix, Sprint, Gran Sport, Can Am, Hurst-olds, and other 73-77 A-bodies


Braided Copper Ground Straps

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Post by RedonRedS-3 Tue Nov 20, 2018 11:30 pm

On my 75 Laguna I remember the Y-ground strap on the engine to hood and firewall...But, for the life of me I can't remember where the remaining one went exactly. I'm thinking chassis to body, but, not sure. Anybody know? Thanks
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Post by S3SS Thu Nov 22, 2018 10:34 pm

The other end went straight to air breather wing nut
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Post by bigredlaguna Fri Nov 23, 2018 9:10 pm

S3SS wrote:The other end went straight to air breather wing nut


??? Never have seen this.
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Post by Mcarlo77 Fri Nov 23, 2018 9:50 pm

My bone stock '77 Monte has that. Was never really sure that was correct until S3SS confirmed it.
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Post by 77camino Sat Nov 24, 2018 1:34 am

My current El Camino does not have it, but I know either my first 77 El Camino or my 74 Malibu did. Found a picture online from a 77 El Camino.

Braided Copper Ground Straps 50a82b10
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Post by S3SS Sat Nov 24, 2018 9:31 am

Braided Copper Ground Straps 2b2e08ac0958c7f403cfed06ae307217

Pic of it in my 76 Laguna engine bay
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Post by bigredlaguna Sat Nov 24, 2018 1:44 pm

So is this a 3rd strap? You have the one going to the hood and engine also?
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Post by 77camino Sat Nov 24, 2018 9:04 pm

Now I’m wondering what the previous owner did to mine. I only have one strap running from the back of the passenger side of the engine to the firewall. S3SS, do you have a closer picture of the mounting locations.
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Post by S3SS Sat Nov 24, 2018 9:10 pm

Will get pics tomorrow
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Post by pila Wed Nov 28, 2018 12:35 am

Since bad grounds sell a lot of un-needed parts, I added some grounds to my '75, like another body to frame, another body to engine,and another one to have a good ground on the core support, where headlights are grounded on some models..  Ground for the dash components is located at the bottom front/left  side of the dash where it bolts on.  I used a slightly longer stainless bolt there, with room to add any future grounds...

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Post by Mcarlo77 Wed Nov 28, 2018 10:01 am

[quote="pila"]Since bad grounds sell a lot of un-needed parts

Ain't that the truth.....
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Post by S3SS Sat Dec 08, 2018 10:41 am

Sorry for the delay...Braided Copper Ground Straps E0e1b9ca275a0d9d0c90d98531ac1ee0 this ground strap runs from rear of engine right side head to firewall
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Post by S3SS Sat Dec 08, 2018 10:42 am

The other ground straps firewall to hood and air breather lidBraided Copper Ground Straps Ab1c0eaaaf6f2924c82fd14f7a83f534
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Post by 77camino Sat Dec 08, 2018 12:44 pm

Thanks for the pictures. I will keep my eye out for one of those that goes to the air cleaner. Previous owner did a lot of strange and unneeded changes. When I got the car, I thought it either had a bad battery or a week starter. After changing both, it still started very slowly and sometimes not at all. After pushing back in the garage I thought that I had made a huge mistake by even buying it. While putting on the starter I realized that the positive cable had a burn mark in, so I replaced both cables. Still bummed about my purchase, I was talking to my brother in law at a birthday party about my problems. I mentioned something about the negative cable and he stopped me mid sentence and said you can’t ground it to the frame you have to go to the motor. Why the previous owner move it to the frame is unknown. I came home around midnight, with my wife holding the flashlight moved the negative to the alternator bracket. WOW, what a difference that made. That’s been about 18 years ago and that cable still has the ugly bolt that I found in my toolbox that night. It is true that a bad ground can cause a lot of unneeded parts and headaches
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Post by pila Sat Dec 08, 2018 7:17 pm

In the old days, the AM radios picked up all kinds of noise from the engine compartment. Adding a ground to the air cleaner was one of the factory's
"fixes' for noise control on the AM band. Of course, all the other grounds are important also, for radio noise and keeping everything working...

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Post by RedonRedS-3 Sat Dec 08, 2018 11:40 pm

Thanks guys, I would have NEVER guessed the locations...
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Post by fasrnur Sun Dec 09, 2018 12:48 pm

Never too many ground wires. One ground strap that so many people don't know about, or forget to add is when they move the battery to the trunk. Most will just run a ground strap from the battery to the frame and call it good. You really need to also run one from the engine to the frame also when you move the battery to the trunk.
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