big 3 upgrade
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Joined: Dec 2012
Posts: 5
big 3 upgrade
I have an 1981 oldsmobile delta 88 i would like to know if anybody done the big 3 upgrade. to there delta, i would like to see some pics, and tips for good ground, and an good spot in the trunk thanks
Registered User
Joined: Sep 2010
Posts: 4,859
From: Indianapolis
I found this.
Performing a "Big 3" upgrade on your vehicle is one way to improve the electrical system performance and its ability to supply power to your audio system. This upgrade will help any vehicle using an after-market amplified stereo system, and most certainly should be performed on any vehicle after a high-output alternator is installed.
Please be sure you read and understand this entire instruction before you begin.
Definition: the "Big Three" upgrade means improving the current capacity of three cables: 1) alternator positive to battery positive, 2) battery negative to chassis, and 3) engine ground to chassis. Some people replace the factory wiring; others add additional cables to the factory wiring. This instruction is to add cables to existing OEM wiring
Performing a "Big 3" upgrade on your vehicle is one way to improve the electrical system performance and its ability to supply power to your audio system. This upgrade will help any vehicle using an after-market amplified stereo system, and most certainly should be performed on any vehicle after a high-output alternator is installed.
Please be sure you read and understand this entire instruction before you begin.
Definition: the "Big Three" upgrade means improving the current capacity of three cables: 1) alternator positive to battery positive, 2) battery negative to chassis, and 3) engine ground to chassis. Some people replace the factory wiring; others add additional cables to the factory wiring. This instruction is to add cables to existing OEM wiring
Registered User
Joined: Sep 2010
Posts: 1,664
From: Norfolk, Va
That needs to be "big 4"! I did that a few times when I worked as a stereo installer.
1. If you have upgraded to a higher output alternator you can add an 8 guage alternator-to-battery wire.
2. A 4 guage wire between battery and engine is good.
3. A 4 guage from engine to chassis,
4. and 4 guage from engine to body completes the upgrade.
You need a relatively high-end system to gain any benefit from these upgrades, but it sure won't hurt.
1. If you have upgraded to a higher output alternator you can add an 8 guage alternator-to-battery wire.
2. A 4 guage wire between battery and engine is good.
3. A 4 guage from engine to chassis,
4. and 4 guage from engine to body completes the upgrade.
You need a relatively high-end system to gain any benefit from these upgrades, but it sure won't hurt.
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Kidcutty
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Mar 10, 2010 06:08 AM
