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  1. i added a ground to the batt : I saw a real gain in voltage.
  2. And I ran a wire from engine block (I could not reach the alt without removing lots of things !) to batt negative. When I put this ground I could definitely see a gain in my voltage !!! It was better than when I had it from engine block to chassis.

I never ran any wire from alt positive to batt positive (I need a mechanic for that) :(

Maybe I did something bad, but I have no dimming light, and my voltage is stable. I loose voltage only when I turn on the A/C.

black BMW X1 2.0 l 192 hp

OEM head unit, Amplifiers Audison AP 8.9 amp with integrated DSP and Ampere Audio 1200.

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IIRC the older engines required braided cable to be attatched tot the engine block enable for to even start.

edit: lol has this post idle for awhile buncha ninjas above me

Edited by SojiaRaggs9000

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I have another simple question: Is the ground from the alternator, to the block, to the frame, combined with the stock wiring, as good or better than 1/0 directly to the alternator?

*New vehicle and system coming soon.*

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I think i did my big 3 wrong. I ran a ground from alt bracket to a strut tower, which is on the drivers side. I ran a ground from batt(passenger side) to strut tower(passenger side) then a wire from alt pos to batt pos. Seemed to help. but my factory wires are crap.

edit spelling

Edited by strangeduck
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So my understanding is:

Charge: Alt to battery

Return: Battery to chassis.

Return Battery to Alt case. (the block in general terms)

The reason being, some cars have a weak grounding strap from the chassis to the engine. Which we all know, sits on rubber isolation supports.

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not many cars can get me to pluggin my ears but this one.......damn. I mean the first minute is ok but that thing just really starts digging deeper and deeper in your earhole till you cant stand it no more. Seems like it does it with relative ease....16 12's on 8 amps.........gotta love it. :)

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its not a bad thing to upgrade you block ground it might not do anything for audio but it sure the hell don't hurt

in my situation it help greatly.


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