Which battery post to attach amp power wire ??

Shane1 · 07-23-2020, 01:15 AM

I'm installing two amps to power my three way front stage and 12" subs. Im going to power it all from the battery in the trunk. I'm wondering where to attach my 0 gauge power wire to tho ?? Recommendations?? I took a pic of the two possible locations on the battery. Which location is recommended? Thanks !

ctuna · 07-23-2020, 02:38 AM

The stuff you are pointing at is a fusible link array.
The other is the BST line.
You don't want to overload it, of blow the BST.
electical e90 pdf
http://www.google.com/url?sa=t&rct=j...,d.cGU&cad=rja
http://www.google.com/url?sa=t&rct=j...85464276,d.cGU
http://www.google.com/url?sa=t&rct=j...85464276,d.cGU

I would use and eyelet ring right of the tightening screw on the
battery lug .

Some people get a connector that plugs into one of the blank
connector positions on top of the battery distribution block but
you have to know that amps of that position for the fusible link.

https://technicpnp.com/product/hifi-harness-xd-kit/

Notice the blue connector on the power wire.
though if you are using 0 gauge wire the battery lug would be safer
remember to use the appropriate inline fuse.

Shane1 · 07-23-2020, 02:52 AM

I'll def avoid using either of them. Thanks for pointing me in the right direction!

I have a bunch of brass eyelet rings that I can use. Do you have a pic of where I should attach it ??
(I've already installed my speakers up front, so just the amps are left. I've upgraded the Big3 so just the Zapco amps are left. I've got a Mosconi DSP as well )
Thanks !!

EDIT: I just saw the link you attached and I see the tightening screw. All good !
Thanks !!

Shane1 · 07-23-2020, 02:59 AM

Quote:

Originally Posted by Shane1

I'll def avoid using either of them. Thanks for pointing me in the right direction!

I have a bunch of brass eyelet rings that I can use. Do you have a pic of where I should attach it ??
(I've already installed my speakers up front, so just the amps are left. I've upgraded the Big3 so just the Zapco amps are left. I've got a Mosconi DSP as well )
Thanks !!

EDIT: I just saw the link you attached and I see the tightening screw. All good !
Thanks !!

Have you installed a system in your 3series??

ctuna · 07-23-2020, 11:26 AM

Yes but it's only a A Jl xd 600/6 on the other hand its a pro kit
from MusicarNW. This is the most highly regarded BMW shop and high
end car shop on the West Coast.

https://www.e90post.com/forums/attac...3&d=1329017429

colorado.e9x · 07-23-2020, 01:26 PM

All the sub installs I've seen thus far use the one I circled. This is what I'm currently using and have had no problems so far

07-23-2020, 01:15 AM	#1
Shane1 Private 11 Rep 56 Posts Drives: 2008 328 xi E91 preLCI Wagon Join Date: Sep 2018 Location: Torrance, CA iTrader: (0)	Which battery post to attach amp power wire ?? I'm installing two amps to power my three way front stage and 12" subs. Im going to power it all from the battery in the trunk. I'm wondering where to attach my 0 gauge power wire to tho ?? Recommendations?? I took a pic of the two possible locations on the battery. Which location is recommended? Thanks ! Attached Images
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07-23-2020, 02:38 AM	#2
ctuna Lieutenant General 2098 Rep 13,467 Posts Drives: 325xi 06 wagon MT Join Date: Jan 2010 Location: Santa Cruz, Ca iTrader: (0)	The stuff you are pointing at is a fusible link array. The other is the BST line. You don't want to overload it, of blow the BST. electical e90 pdf http://www.google.com/url?sa=t&rct=j...,d.cGU&cad=rja http://www.google.com/url?sa=t&rct=j...85464276,d.cGU http://www.google.com/url?sa=t&rct=j...85464276,d.cGU I would use and eyelet ring right of the tightening screw on the battery lug . Some people get a connector that plugs into one of the blank connector positions on top of the battery distribution block but you have to know that amps of that position for the fusible link. https://technicpnp.com/product/hifi-harness-xd-kit/ Notice the blue connector on the power wire. though if you are using 0 gauge wire the battery lug would be safer remember to use the appropriate inline fuse. Last edited by ctuna; 07-23-2020 at 02:55 AM..
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07-23-2020, 02:52 AM	#3
Shane1 Private 11 Rep 56 Posts Drives: 2008 328 xi E91 preLCI Wagon Join Date: Sep 2018 Location: Torrance, CA iTrader: (0)	I'll def avoid using either of them. Thanks for pointing me in the right direction! I have a bunch of brass eyelet rings that I can use. Do you have a pic of where I should attach it ?? (I've already installed my speakers up front, so just the amps are left. I've upgraded the Big3 so just the Zapco amps are left. I've got a Mosconi DSP as well ) Thanks !! EDIT: I just saw the link you attached and I see the tightening screw. All good ! Thanks !!
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07-23-2020, 11:26 AM	#5
ctuna Lieutenant General 2098 Rep 13,467 Posts Drives: 325xi 06 wagon MT Join Date: Jan 2010 Location: Santa Cruz, Ca iTrader: (0)	Yes but it's only a A Jl xd 600/6 on the other hand its a pro kit from MusicarNW. This is the most highly regarded BMW shop and high end car shop on the West Coast. https://www.e90post.com/forums/attac...3&d=1329017429
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07-23-2020, 01:26 PM	#6
colorado.e9x eBay Special 3784 Rep 3,218 Posts Drives: E90 330xi, E90 328xi Join Date: Feb 2018 Location: Western Slope, Colorado iTrader: (1) Garage List 2006 BMW 330xi [10.00] 2007 BMW 328xi [8.33]	All the sub installs I've seen thus far use the one I circled. This is what I'm currently using and have had no problems so far Attached Images __________________ Common sense is a flower that does not bloom in everyone's garden
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