4 gauge is pretty much common now. I have 4 gauge on my Alphasonik 300watt amp. Since I plan on upgrading the amp and subs in the future, I dont have to go back to the stereo shop to reinstall the new wiring if I went with the original 8 ga wiring. I just switch out the amp and subs. Simple as that.
Personally I dont know what car you have specifically, but my 02 Neon has 2 different install kits. One which is iso-mounted (meaning the radio mounts behind the opening). and the normal kit where the radio sits normally.
Monster Cable has a 3 way battery post cable hook-up with a removable clear cover. I have this which I plan to use when I have the proper tools to install the cabling.
Vehicle: 2003 Dodge Neon SE, 2002 Roush Mustang, 1986 Ford F150
Location: Northen California
Posts: 1,073
When you are upgrading the grounds, you are basically wanting to upgrade them to handle the output. Is 1/0 overkill for what you have? Sure, but you could upgrade things even more and not worry about it. Some people use 8 gauge, as it was mentioned above. I think unless you are going with something super extreme, 4 gauge would work fine.
0 gauge wiring is recommended for an amp/group of amps that run into the 2000+watt range not to mention a new higher output alternator or multiple high output alternators since most car's stock alternator arent built to handle that much of a power drain from the amp(s) Oh and be sure to have a 1-2 farad capacitor for every 1000watts of power (amp). I personally use a 2 farad cap per 1000.
The grounds to the body and engine look very easy.
BUT the alternator looks extremely difficult.... i can barely see the B+ nut let alone how to get to it, and where to run the wire!
also i want to upgrade the factory wire to the power distribution center with matching 4awg to look cool, plus then i will have a neat and nice looking battery terminal and good grounds
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2005 Dodge neon CE
Mods - 5% window tint 35% up front. 1000w RF amp + 2 - 10" Alpine type E
To do - Install after market Trans cooler, upgrade main power wires.