Grounds???

[bgowdy 5,000+ posts]

Ok yea ive had alot of questions lately. But anyway here goes:

i removed my front battery due to it went bad(old). Im now running my truck off the rear battery bank. I had 2 ground runs from that battery to the back batteries. Im kind of confused on how i should do my grounds now seeing there is no batt under the hood right now. Idk what i should do with those to grounds runs in order to make them useful to the electrical system.

Im jusr wondering where i should move them to.... I have the big 3 done but not sure how it benifits with no front batt now.

Click to read more...

 

[pickup1 5,000+ posts]

I think grounds should be as short as possible..

 

[tommydh 10+ year member]

Your best bet here is to make a ground bar. You can run the rear batteries to it with one run up to the fron to hit the engine block. Basically where ever your grounding the Batteries run 1 1/0 upt the engine compartment if you can keep it neet and protected run under the vehicle. The remaining system grounds wll Function as normal.

 

[bgowdy 5,000+ posts]

Your best bet here is to make a ground bar. You can run the rear batteries to it with one run up to the fron to hit the engine block. Basically where ever your grounding the Batteries run 1 1/0 upt the engine compartment if you can keep it neet and protected run under the vehicle. The remaining system grounds wll Function as normal.

hm... the only thing is its so neatly done right now lol... all wires are under lol. but anyway, so i need atleast 1 run from the engine block to the back batteries, then ground the batteries them selves in back as well? since both runs are already in the front and under the carpet, cant i go ahead and ground both to the engine block, and connect them at the back batteries?

 

[bgowdy 5,000+ posts]

bump....

 

[tommydh 10+ year member]

you can but id land the ones from front tpo a ground bar. then one from the batteries to same bar gives you ability to isolate individual batteries if need. In Big 3 it doesn matter where battery is you need from battery to ground; ground to engineand battery to alt thats as simple as that. Dont worry where it is just get it connected.

 

[bgowdy 5,000+ posts]

you can but id land the ones from front tpo a ground bar. then one from the batteries to same bar gives you ability to isolate individual batteries if need. In Big 3 it doesn matter where battery is you need from battery to ground; ground to engineand battery to alt thats as simple as that. Dont worry where it is just get it connected.

I see. I dont need to isolate any batteries tho. But im curious you said battery to alt.. Did you mean ground the batteries to the alt or something?

 

[phemps 10+ year member]

You could ground them to the alt case as well. Electrically its the same as the engine

 

[bgowdy 5,000+ posts]

You could ground them to the alt case as well. Electrically its the same as the engine

oh i see..

 

[bgowdy 5,000+ posts]

You could ground them to the alt case as well. Electrically its the same as the engine

I didnt think you were suppose to do that

 

[phemps 10+ year member]

No? if not id like to know why not, I've never had an issue and I've grounded a bank before that way. Because of noise?

 

[bgowdy 5,000+ posts]

No? if not id like to know why not, I've never had an issue and I've grounded a bank before that way. Because of noise?

Idk.... Im just trying to fix my grounds because as i said before i had everything all set up in my blazer and it was working fine. Then i changed my setup to 2 15s and the box was big so i had to rearrange my batss so i changed how i had my grounds placed. It worked fine for about a week then i started to notice my volt meter was lower then normal in voltage. But its weird because the last few days ive cranked it, it went up to 14.2 and 14.4. It didnt stay there very long but it went. It was only doing like 13v to 13.4 a week ago. With that being said im thinking it may just be a bad grounds from where i changed the back grounds around to move my batts, but idk.....

 

[phemps 10+ year member]

Have you checked that you perfect continuity in your new ground points? And you know that all the other batteries are still good? A

 

[bgowdy 5,000+ posts]

Have you checked that you perfect continuity in your new ground points? And you know that all the other batteries are still good? A

I did get the batts tested and they showed good at advance auto on the batt machine, they were just low from the alt not charging them very well....

 

[tommydh 10+ year member]

I see. I dont need to isolate any batteries tho. But im curious you said battery to alt.. Did you mean ground the batteries to the alt or something?

I was refeering to the positive of the battery to the alternator sorry for not being clear.