grounding second battery?

[trey4sports 10+ year member]

i know your suppose to ground your rear battery to your front battery but what happens if i just ground the rear battery to the chassis will it hurt for a DD setup?

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[PhatTonyDeMarco 5,000+ posts]

You aren't 'supposed' to ground to the front battery, it is just normally reconmended. There is nothing wrong with grounding in the rear, as long as it is an adequate grounding location.

I have been running a second battery grounded to the frame in the rear of my Jeep for about a year without a problem.

 

[Twistid 5,000+ posts]

i always thaught you were supposed to ground to front battery,

but i have my rear grounded to the chassis too ...

 

[trey4sports 10+ year member]

thanks guys, i really do appreciate it

 

[audioholic 5,000+ posts]

i always thaught you were supposed to ground to front battery,
but i have my rear grounded to the chassis too ...

When you chassis ground the rear batt, you ARE grounding it to the front batt, as its connected to the chassis also.
If you have a full-frame, just use it for a buss-bar. If you drive a uni-body, you may want to consider a seperate ground wire run.

 

[Twistid 5,000+ posts]

When you chassis ground the rear batt, you ARE grounding it to the front batt, as its connected to the chassis also.
If you have a full-frame, just use it for a buss-bar. If you drive a uni-body, you may want to consider a seperate ground wire run.

Grounding to the actual battery itself is even better than ground to the chassis. It gives you a DIRECT path to the battery (and alternator if the big3 is completed).

Unlike when you ground to the chassis, when the reference point of ground in the front... and ground in the rear can differ. There is MUCH more resistance in the chassis itself... current has to travel through the entire body of the vehicle... through shoddy welds... and sometimes piant/undercoat.

Grounding to the battery gives you the EXACT same reference point of ground as the battery itself (power source) AND alternator (again, if you've completed the big three).

Why do you think dBDrag competitors run dozens of runs of positive AND negative to the rear of their vehicle? You think they would do all the negatives if they could just get the equivalent by running a dozen chassis grounds to some point on the body of the car itself in the rear?

???

 

[ngsm13 5,000+ posts]

Read the rest of the thread that I posted that in.

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nG