The wiring put in place by automakers is just sufficient enough to support the current demands of the factory accessories and is rarely able to support much more than that. Others add additional cables to the factory wiring.
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Big 3 upgrade wiring diagram. Basically three additional runs of wire are added to the vital parts of your cars electrical system in order to support high current draw from powerful amplifiers. Performing what is known as the big 3 upgrade to your vehicle will improve the performance of your electrical system and increase its current handling capabilities. The stock wiring is only adequate for the electronics the vehicle came with from the factory. The car stereo big three wiring upgrade does not go all the way and should be the big four upgrade. This should be the first upgrade done to your electrical system which will then allow you add more powerful audio system components. A good cost effective improvement is to perform the big three electrical upgrade.
The big three upgrade means improving the current capacity of three cables. 10 awg big 3 upgrade kits will accommodate aftermarket alternators making up to 300 amps. Hey guys i just had a question about the big three wiring upgrade on the challenger. The big 3 wiring upgrade one aspect that is often overlooked when installing a high power mobile audio system is the current capacity of the factory wiring. The big three wiring upgrade. So i went and added a kinetik 1400 battery in addition.
Factory wiring is thin and insufficient. This video shows what is going on in the alternator and why. This the most overlooked necessities of car audio. I have a 09 rt challenger and i have added a jl 1000 v2 amp and 2 jl 12 subs to the car. The big 3 is a very simple addition to your cars electrical system. This instruction is to add cables to existing oem wiring.
Youre all set to upgrade the alternator when your budget permits as youve paved the way for this. Some people replace the factory wiring. 1 alternator positive to battery positive 2 battery negative to chassis and 3 engine ground to chassis. The big 3 is a very easy upgrade to your cars electrical system that will help to reduce voltage drop for power hungry amplifiers. 2 awg big 3 upgrade kits will accommodate aftermarket alternators making up to 225 amps. If youve ever measured your voltage drop when playing music with the volume to the max with your engine running youll see that instead of reading 144v or 138 depending on car your voltmeter will read 13v 12v or even lower.
With the big 3 installed you will notice higher voltages to your amp which means your amplifier is putting out more power than it could before. Any extra demand will require. Some get it right but some do not. My lights were diming like crazy with every hit of the bass. It is suggested that if you install a car audio system of 1000 watts or greater you will need to upgrade the stock wiring in the charging system. This will vastly improve your vehicles electrical system allowing more current to flow easier to all components.
The big three upgrade.
Gallery of Big 3 Upgrade Wiring Diagram
