How to Upgrade the Big Three

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still_walkin

Silver - Posts: 644

Joined: April 18, 2007

Location: California, United States

Posted: July 16, 2007 at 2:50 PM / IP Logged

Had the same problem that engine ground is a pain to find and when you do find it if it isn't bolted right when you upgrade the last three the car won't start so since the alternator is connected to the engine you can use the alternators ground. I've seen online people either used the engine bock or the alt. But if you perfer top use the engine ground this is how you find it your battery negaitive terminal has 2 wires on the post one is the cars main ground and the other is the engines ground. It goes down the the front of your engine fans and evently to the engine block. Also it gonna be a pain to follow if your engine isn't the cleanest. But that's the easiest weay to find it or get the wiring diagrams for your car. Good luck

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gmfan09

Member - Posts: 2

Joined: July 15, 2007

Location: United States

Posted: July 16, 2007 at 9:00 PM / IP Logged

Thanks still_walkin. I have a wiring diagram for my car but it is way to complicated for me to be messing around with. Use the alt as a ground do I have to drill a hole in the case and attach a bolt cause I dont think I wanna do that.

klownicle

Member - Posts: 4

Joined: July 13, 2007

Posted: July 18, 2007 at 12:03 PM / IP Logged

My voltage after upgrade hasn't changed at all from my stock stuff. I get 13.8 volts and it can go as low as 12.6 without the stereo running at night.

Anyone got any pointers?

DYohn

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Joined: April 22, 2003

Location: Arizona, United States

Posted: July 24, 2007 at 11:28 AM / IP Logged

klownicle wrote:

My voltage after upgrade hasn't changed at all from my stock stuff. I get 13.8 volts and it can go as low as 12.6 without the stereo running at night.

Anyone got any pointers?

Sounds like time for a better alternator.

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Mad Scientists

Silver - Posts: 380

Joined: February 07, 2004

Location: United States

Posted: July 25, 2007 at 12:24 PM / IP Logged

If you're going to 12.6v without anything aftermarket drawing power, I'd start looking for either a voltage drop somewhere or an alternator problem.. where are you measuring the voltage at?

Jim

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qwarnon

Member - Posts: 1

Joined: December 13, 2006

Location: United States

Posted: July 28, 2007 at 8:13 PM / IP Logged

upgrading the big 3 definetly helped. its a good idea

erroneous930

Member - Posts: 3

Joined: August 04, 2007

Location: United States

Posted: August 04, 2007 at 1:34 AM / IP Logged

heres some pics of the Big 3 i just did on my car

How to Upgrade the Big Three - Page 10 -- posted image.

erroneous930

Member - Posts: 3

Joined: August 04, 2007

Location: United States

Posted: August 04, 2007 at 2:02 AM / IP Logged

I should of made the wire from the battery to the chassis shorter but i accidently got this ground terminal with 2 1gauge inputs so just used it for grounding the battery and alternator. I didn't put a fuse from tha alt to battery but probably will do that next.

badasschevillac

Member - Posts: 32

Joined: August 05, 2007

Location: United States

Posted: August 05, 2007 at 8:40 PM / IP Logged

i have an hi out alt. (200 amp) and even put a smaller pulley on it (a tiny bit smaller, barley any smaller), my voltage meter (at idle) still reads very very low and my mids and highs cut out when the bass hits (when idling). can anyone help me?

***i added 1/0 to both the +batt.--->+alt. and the -batt.--->engine block, i know this has probably been asked a million times, but what else do i have to do? is there something that can stop what i have explained above? and also what is the point of putting a fuse in-between the +batt. and the +alt.? and if i were to do this what amp fuse would i use, more than 200 because of my alt. output?

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erroneous930

Member - Posts: 3

Joined: August 04, 2007

Location: United States

Posted: August 05, 2007 at 9:37 PM / IP Logged

you want the wire from the -battery to go to the chassis and also one from the case of the alternator to the chassis.

if your amp is cuttin out it could be the ground for the amp, just make sure to scrape all paint off for all grounds/make it shiney...

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