Grounds...

[nbudros 10+ year member]

Is there any way to fabricate a perfect ground? What makes a ground good? I know connecting it to the frame but why is that? Im trying to understand the "science" behind it, because I don't know if ill be able to get a good ground in my jetta

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[05gliguy 10+ year member]

where are you trying to ground it to now?

 

[azbass 5,000+ posts]

as long your ground location has the absolute lowest resistance compared to the neg on the batt. you should be fine

 

[nbudros 10+ year member]

When i had my saz1500d i had a bolt in the trunk wall, that was not to good but worked with the 1500d.

then i used a m3 with that one and it didnt work so I moved the ground to the bottom of the car on the outside underneath the trunk, it connects to the body/frame which connects to the wheels...

I have a unibody cus its a jetta... so its hard.

like an explorer was easy to find a ground

 

[nbudros 10+ year member]

as long your ground location has the absolute lowest resistance compared to the neg on the batt. you should be fine

how do i test that?

 

[azbass 5,000+ posts]

with a Digital Multi meeter.

 

[nbudros 10+ year member]

ok... so thats the long version for DMM right?

 

[azbass 5,000+ posts]

stick one probe on the batt Neg terninal, then stick the other probe on the area you wish to ground and see what kinda resistance you have.

 

[nbudros 10+ year member]

So what setting tells me that on this dmm

 

[azbass 5,000+ posts]

you will probably have to extend the wires.

 

[nbudros 10+ year member]

azbass thanks for being so helpfull

 

[nbudros 10+ year member]

My battery isnt set in stone but yeah...

 

[ultimate157 5,000+ posts]

Go to 6 o'clock on that DMM.

 

[nbudros 10+ year member]

Thats the Ohm symbol correct?

 

[ultimate157 5,000+ posts]

Thats the Ohm symbol correct?

yes. setting it on the lowest setting (200) will give you the most accurate result for your application.