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Voltage drop after upgrades


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yes sir, 2 runs from alt to front batt, 1 run from alt to rear batt (s)

I would remove the run from the alt to the back and the last battery you installed. Ground your amps to the batteries not the frame. Amps that size with a 220 alt, two batteries and big wires should not be pulling that much from your voltage.

2000 GMC Sonoma

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it wasent in the first place, but i am planning on running my amp down under 1 ohm, next year, so i figured i might as well beef it up now, thats why i added the extra wire, and battery.

99 s10 4.3L

Big 3

220amp alt

Odyssey 1500

Odyssey 2150

Northstar NSB 75

Sundown Audio 3500D

Sundown Audio 125.2

3 Sundown Audio SA-12's

Alpine H/U

RF Power Comp set 6.5"

RF 3 sixty line driver

5.25 cubes @ 31hz

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well i just ordered up a XS power VCM to see if that can help my problem.

99 s10 4.3L

Big 3

220amp alt

Odyssey 1500

Odyssey 2150

Northstar NSB 75

Sundown Audio 3500D

Sundown Audio 125.2

3 Sundown Audio SA-12's

Alpine H/U

RF Power Comp set 6.5"

RF 3 sixty line driver

5.25 cubes @ 31hz

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sounds good man

but remember you said you didnt buy it to upgrade more things haha

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Honest estimate on this truck when it's all done........... 172.3...........

Ehh.. U are aware of what 172.3 is, right?

yep.....:)

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lol i know i know, but i figured this isnt to much of a loss, as it could be used for more applications. and was the cheapest solution other then selling a battery. But i could also sell the battery and still use the vcm, never know, depends on how it all plays out. but i am going against what i said a bit lol.

99 s10 4.3L

Big 3

220amp alt

Odyssey 1500

Odyssey 2150

Northstar NSB 75

Sundown Audio 3500D

Sundown Audio 125.2

3 Sundown Audio SA-12's

Alpine H/U

RF Power Comp set 6.5"

RF 3 sixty line driver

5.25 cubes @ 31hz

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Is it a possibility that the new battery you got isn't charged or is no good, therefore causes your alternator to work harder trying to charge it?

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well thats what i was thinking at first, but i bought it off a good friend of mine, and he charged it before he gave it to me, and resting voltage after letting my truck sit for 3 days, was still good, the resting voltage actually went up .2 adding the new battery. Also driving conditions are fine, works great, only time it dips down a lot lower is when the bass hits.

99 s10 4.3L

Big 3

220amp alt

Odyssey 1500

Odyssey 2150

Northstar NSB 75

Sundown Audio 3500D

Sundown Audio 125.2

3 Sundown Audio SA-12's

Alpine H/U

RF Power Comp set 6.5"

RF 3 sixty line driver

5.25 cubes @ 31hz

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