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Grounding Barrier Question

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Old Apr 27, 2011 | 10:35 AM
  #1  
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Default Grounding Barrier Question

Im planning on running a 7 Circuit Fuse Block under my dash from Painless.

Im going to pick up 2 8-Position Dual-Row Barrier Strips. One for Power and one for Ground.

Question is this: For the ground, is it okay to ground 1 position and then jumper the rest for the ground side? Then connect each individual ground wire for my accessories to this? Or should I ground each position individually?

Attached is a picture i made to illustrate my plan.

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Old Apr 27, 2011 | 10:45 AM
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That would work. You can also get a 4 position terminal block and just bring 2 ring or spade terminals off of each position.

If you get a smaller 4 position terminal you can ground things like lights directly where the light mounts. That way you only have to run a single hot wire to the accessory and then ground it locally. Less wire to buy and install.
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Old Apr 27, 2011 | 01:26 PM
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Originally Posted by KyleTheGrouch
Im planning on running a 7 Circuit Fuse Block under my dash from Painless.

Im going to pick up 2 8-Position Dual-Row Barrier Strips. One for Power and one for Ground.

Question is this: For the ground, is it okay to ground 1 position and then jumper the rest for the ground side? Then connect each individual ground wire for my accessories to this? Or should I ground each position individually?

Attached is a picture i made to illustrate my plan.

Attachment 154496
Remember! Your grounds cary the same amount of amperage in the reverse direction. So, in a "daisy chain" situation, each dasiy loop wouldl need to be rated to carry the load befor it. Pluss the load attached to that particular loop. The next loop would need to be rated to cary the loop befor it and the previous loop. Then the next loop would have to carry the previous loops. Ect Ect. Using a ground buss is a good idea. But you need to calculate the total ground load on the buss. Then size your ground wires accordingly. Instead of a terminal block. Maybe look at a solid copper buss.

Last edited by JK-Ford; Apr 27, 2011 at 01:30 PM.
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Old Apr 27, 2011 | 03:44 PM
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Thanks for the replies. I really want a clean install and aren't worried about wire cost. And since most accessories purchased for the jeep come with matching hot and ground I don't think I'll be paying out as much for wiring as I think.

Also, your idea about a solid copper buss is great. I may go that route. However, I was just told that I can use a higher gauge wire to daisy chain and just create 2 back lead grounds instead of one to make sure I supply each grounding point with enough amperage. I don't know 100% yet but I'm sure I'll post pics of the end result. Thanks so much!
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Old Apr 27, 2011 | 03:50 PM
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radio shack carrys a conector for your block that would do the same as your daisy chain and carry all the aperage you would need
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Old Apr 27, 2011 | 03:51 PM
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Originally Posted by muttsjk
radio shack carrys a conector for your block that would do the same as your daisy chain and carry all the aperage you would need
Oh. I'll check that out since that's where i was planning on getting the block anyways. Thanks!
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Old Apr 28, 2011 | 06:10 AM
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Try This. I don't have it marked. But you can see where the black cable is attached to the (-) side of the battery. And extends to the ground bar secured to the fender.

Click image for larger version

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http://www.lowes.com/pd_105748-76863...3Dground%2Bkit

Last edited by JK-Ford; Apr 28, 2011 at 06:15 AM.
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Old Apr 28, 2011 | 06:40 AM
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Originally Posted by JK-Ford
Try This. I don't have it marked. But you can see where the black cable is attached to the (-) side of the battery. And extends to the ground bar secured to the fender.

<img src="https://www.jk-forum.com/forums/attachment.php?attachmentid=154689"/>

http://www.lowes.com/pd_105748-76863...3Dground%2Bkit
Would this would work under my dash behind the glovebox if I sanded the metal to give it a more complete ground? I suppose self tapping screws would give a good ground too but I want to be doubly sure.
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Old Apr 28, 2011 | 07:35 AM
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Originally Posted by KyleTheGrouch
Would this would work under my dash behind the glovebox if I sanded the metal to give it a more complete ground? I suppose self tapping screws would give a good ground too but I want to be doubly sure.
Yes. This would work attached to any metal ground point. But, you still need to consider the return path to the battery. The bonding wire between the battery and the frame is not rated to carry much more than the load of the vehicle. That is why I ran a new conductor between the battery and the grounding bar.
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Old Apr 28, 2011 | 09:56 AM
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Default Current in reverse?

Originally Posted by JK-Ford
Remember! Your grounds cary the same amount of amperage in the reverse direction.

Hey Jk-Ford! You know I have ultimate respect for your posts here. You have been very helpful to me, as well as many others here. However, I need some help.... Were you thinking "Alternating Current" in the above quote? It's my understanding that DC goes only in one direction. Also, the ground cable or buss bar pulls less current than the positive side of the circuit; because the devices use some of the power/energy. This is why the ground cables at the battery are a smaller gauge then the positive cables. Am I wrong? I'll hang-up and listen to your answer.
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